Contact

Representative before the EPO

Technology company logo thumb
no operation time available
1 office
Technology Company

Representative before the EPO

Company dna http slash slash www dot ludewigt dot de slash
no operation time available
1 office
active in Legal Services

We have observed 78 EP applications Christoph Ludewigt has served for within the last five+ years. (We consider all applications which have an EP A1 or A2 publication dated after December 08, 2013). Please note, that we only count EP applications, in which the name of the patent attorney is explicitly mentioned as representative. These EP applications are:

EP12752388

OPTICAL CHARACTERISTICS MEASURING APPARATUS, AND OPTICAL CHARACTERISTICS MEASURING METHOD

IPC classification:
G01N 21/27, G01N 21/23, G01J 4/04
Applicant:
Kagawa University
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
GRANT OF PATENT INTENDED
EP12178684

Camera system and method for recording a flow of objects

IPC classification:
G06K 9/32, G06K 7/10, B07C 3/14
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP12178680

Detection system for mounting on a conveyor belt

IPC classification:
G06K 7/10
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
OPPOSITION PROCEDURE CLOSED
EP12178690

Transmission and receiver unit and rotary encoder with such

IPC classification:
G01D 5/347, G01B 11/26
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13189014

Sensor

IPC classification:
G01D 11/24
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP12196301

Transmission and receiver unit and rotary encoder with such

IPC classification:
G01D 5/347, G01D 5/34, G01D 5/26
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13179619

Fixing device and method for fixing for a lightcurtainhousing

IPC classification:
G01V 8/10, G01D 11/30, F16B 3/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP11166555

3D camera and method for three dimensional surveillance of a surveillance area

IPC classification:
G01B 11/25, F16P 3/14
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13162144

Spectrometer and method for operation

IPC classification:
G01J 3/42, G01J 3/02, G01J 1/42
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
EXAMINATION IN PROGRESS
EP13164540

Sensor

IPC classification:
G01V 8/10
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
PATENT GRANTED
EP14156660

Object localisation on a conveyor device

IPC classification:
G01S 13/87
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP12179022

Rotary encoder

IPC classification:
H02G 3/08, G01D 11/24, G01D 5/244
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP12184912

Optoelectronic sensor and method for recording a depth map

IPC classification:
G01S 17/89, G01S 7/483, G01S 7/481
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION REFUSED
EP12178686

Camera system and method for recording a flow of objects

IPC classification:
H04N 7/18, G06K 7/10
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14160449

Laser scanner for navigating a vehicle

IPC classification:
G01S 17/42, G01S 17/06, G01S 7/497, G01S 7/481, G01C 21/12
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
APPLICATION WITHDRAWN
EP14150550

Sensor

IPC classification:
G01V 8/20
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
PATENT GRANTED
EP13156530

Gas measuring device

IPC classification:
G01N 21/35, G01N 21/17
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
PATENT GRANTED
EP13193007

RFID reading tunnel for identifying objects by means of RFID

IPC classification:
G06K 7/10
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13179809

Method and device for configuring and/or programming a safety controller

IPC classification:
G05B 19/042, G05B 9/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13180321

System for laser beam soldering having a soldering wire feeder system and a coated wire feeder system

IPC classification:
H05K 3/22, H05K 3/10, H01L 23/00, B23K 20/00, B23K 1/005, B23K 1/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP11871690

SPUTTERING THIN FILM FORMING APPARATUS

IPC classification:
H05H 1/46, H01J 37/34, H01J 37/32, C23C 14/35, C23C 14/34
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
GRANT OF PATENT INTENDED
EP14170185

Two-channel measuring device

IPC classification:
G01N 21/35, G01N 21/33, G01N 21/31, G01J 3/427
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13754054

METHOD AND DEVICE FOR MEASUREMENT OF UNOCCUPIED ENERGY LEVELS OF SOLID

IPC classification:
G01N 23/225, G01N 21/62
Applicant:
Kyoto University
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
GRANT OF PATENT INTENDED
EP12174918

Method for securely detecting and positioning objects and safety device

IPC classification:
G01S 17/88, G01S 17/42, G01S 17/02, G01S 7/486, G01S 7/481
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
OPPOSITION REJECTED
EP12182737

Safety laser scanner

IPC classification:
G01S 17/95, G01S 17/88
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14176328

Illumination device and method for generating an illumination field

IPC classification:
G02B 19/00, G02B 3/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP12178652

Stator coupling

IPC classification:
G01D 5/347, F16D 1/12
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14176330

Illumination device and method for generating an illumination field

IPC classification:
G02B 19/00, G02B 3/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13187159

Spectrometer for gas analysis

IPC classification:
G01N 21/35, G01N 21/17, G01J 3/433, G01J 3/42, G01J 3/26, G01J 3/12, G01J 3/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13187973

Optoelectronic sensor and method for manufacturing the same

IPC classification:
G01D 5/34
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP13188153

Optoelectronic sensor and method for detecting object information

IPC classification:
G06K 7/10, G01V 8/22
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13189520

Rotary encoder having a self-sufficient energy supply

IPC classification:
G01D 5/244, G01D 5/14
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13188703

Information interface and propulsion system including the same

IPC classification:
H02P 31/00
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION WITHDRAWN
EP13190692

Optoelectronic sensor

IPC classification:
G01V 8/20
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP13192042

Modular safety switch

IPC classification:
F16P 3/14, F16P 3/08
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP13194307

Light grid

IPC classification:
G01V 8/20
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP13194651

Sensor for detecting objects

IPC classification:
G06K 7/10
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14187100

Fastening device for concentric fixing of a shaft on an encoder shaft and motor feedback system blade with such fastening

IPC classification:
F16D 1/095, F16D 1/05
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP13197523

Light grid

IPC classification:
G01V 8/20
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14152456

Method for configuring a laser scanner and configuration object for the same

IPC classification:
G01S 17/88, G01S 17/42, G01S 7/481
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP13844486

SPECTRAL CHARACTERISTIC MEASUREMENT DEVICE

IPC classification:
G01N 21/35, G01N 21/27, G01J 3/45
Applicant:
Kagawa University
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
The patent has been granted
EP14163146

Method for welding a packaging and packaging machine

IPC classification:
B65B 57/04, B65B 51/26, B65B 51/16, B29C 65/78, B29C 65/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP15157496

LIGHT SENSOR

IPC classification:
H03K 17/94, G01V 8/12, G01S 17/48, G01S 17/08, G01S 17/02, G01S 7/51
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14166081

Safety control system for safe operation of a technical installation and method for operating the safety control system

IPC classification:
G05B 9/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14166713

Device and method for optically detecting an object

IPC classification:
G01S 17/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP15166291

CONVEYOR JAM DETECTION SYSTEM AND METHOD

IPC classification:
B65H 7/06
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14168838

Measuring device for the measurement of a certain gas component

IPC classification:
G01N 21/35, G01N 21/31, G01N 21/27, G01J 3/42
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14169806

Camera and method for capturing image data

IPC classification:
H04N 5/225
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14169788

Method and Apparatus for safely monitoring the state of two devices

IPC classification:
H01H 47/00, G05B 19/418, G05B 19/05, G05B 19/042, G05B 9/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP14169764

Device for measuring an angle of rotation and method for determining an angle of rotation

IPC classification:
G01J 9/00, G01D 5/30, G01D 5/28
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14175631

Sensor and method for precise detection of an object conveyed relative to the sensor in a direction of travel

IPC classification:
G01S 17/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION REQUESTED
EP14176351

Image acquisition system for detecting an object

IPC classification:
G06K 7/00, G06K 9/20
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP14175283

Device and method for diffractive measurement of an angle of rotation

IPC classification:
G01D 5/38
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP15169062

SPECTROSCOPIC MEASUREMENT DEVICE

IPC classification:
G01J 3/02, G01J 3/28, G01J 3/453
Applicant:
Kagawa University
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
EXAMINATION REQUESTED
EP12173211

Optoelectronic sensor element

IPC classification:
H01L 31/0216, G02B 5/30, G01J 4/04, G01D 5/34
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14187405

Illumination device and method for generating an illumination field

IPC classification:
H04N 13/04, G02B 26/08, G02B 3/00, G06K 7/00, H01L 27/146, G02B 3/14, G01B 11/02
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14187404

Illumination device

IPC classification:
G06K 7/10, G02B 26/08, G02B 3/14, F21V 14/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP14187799

Focus adjustment device for an image acquisition system

IPC classification:
F16H 25/22, G02B 7/04
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP14188387

Flow measuring device for measuring a parameter of a fluid flow

IPC classification:
G01F 1/66
Applicant:
SICK Engineering GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14191387

SYSTEM FOR ELECTROPLATING A BAND

IPC classification:
C25D 21/12, B65G 49/04, C25D 17/00, C25D 7/06
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
EXAMINATION REQUESTED
EP14197451

Optoelectronic sensor

IPC classification:
G01S 7/481, G01S 17/42
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14197704

Method and ultrasound flow measuring device for determining the CO2 emission factor in flare gas systems

IPC classification:
G01N 29/024, G01F 1/66
Applicant:
SICK Engineering GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP14198235

Device and method for determining the absolute position of a moving object

IPC classification:
G01D 5/26, G01S 7/491, G01B 9/02, G01D 5/245
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP15162508

POSITION MEASURING SYSTEM

IPC classification:
G01B 7/02, G01D 5/48, F15B 15/28
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION WITHDRAWN
EP16159770

METHOD AND DEVICE FOR DETECTING THE PRESENCE OF A LIQUID IN A GAS FLOW

IPC classification:
G01F 1/74, G01F 1/66
Applicant:
SICK Engineering GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP16152290

OPTOELECTRONIC DEVICE FOR DETECTING LENGTH AND ANGLE INFORMATION

IPC classification:
G01D 5/347
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP16158955

MEASURING DEVICE FOR MEASURING A PATH AND/OR A SPEED AND METHOD FOR MOUNTING THE SAME

IPC classification:
G01D 11/30, G01B 3/12
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP16157769

MEASURING DEVICE FOR MEASURING A PATH AND/OR A SPEED

IPC classification:
G01D 11/30, G01B 3/12
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP15173430

TILT ANGLE MEASURING DEVICE FOR DETERMINING A TILT ANGLE

IPC classification:
G01D 5/20, G01P 15/00
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP15188258

OPTOELECTRONIC SENSOR

IPC classification:
G01D 5/34, G01D 5/347, G01D 5/30
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION REQUESTED
EP16194205

ANGLE MEASUREMENT SYSTEM FOR DETERMINATION OF AN ANGLE OF ROTATION

IPC classification:
G01D 5/28
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP16195226

ROTARY ENCODER TO MEASURE A VARIABLE OF A ROTATING OBJECT

IPC classification:
G01P 15/00, G01P 3/44, G01D 5/241, G01D 5/20
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The patent has been granted
EP17157914

FLOW MEASUREMENT WITH ULTRASOUND

IPC classification:
G01F 1/66, G01F 1/32
Applicant:
SICK Engineering GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
Request for examination was made
EP17157443

CONVEYOR DEVICE FOR CONVEYING OBJECTS AND/OR PERSONS

IPC classification:
B25J 13/08, B25J 9/00
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The application has been published
EP18154755

CONVEYOR DEVICE FOR CONVEYING OBJECTS AND/OR PERSONS

IPC classification:
B25J 13/08, B25J 9/00
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The application has been published
EP18154762

MEASURING SYSTEM AND CONVEYING DEVICE

IPC classification:
B25J 13/08, B25J 9/00
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The application has been published
EP17166569

MEASURING DEVICE FOR MEASURING A FLOW SPEED OF A FLUID

IPC classification:
G01F 15/18, G01F 1/66
Applicant:
SICK Engineering GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
Request for examination was made
EP17166643

MOTOR-FEEDBACK SYSTEM

IPC classification:
G01K 15/00, G01K 7/22
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
The application has been published

Please Sign in to use this feature