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Representative before the EPO

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Christoph Ludewigt has worked on the following 79 EPO patent applications which have been published in the last five years:

EP11178844

Rotary encoder

IPC classification:
G01B 7/30, G01D 5/12, H02K 24/00
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION WITHDRAWN
EP12752388

OPTICAL CHARACTERISTICS MEASURING APPARATUS, AND OPTICAL CHARACTERISTICS MEASURING METHOD

IPC classification:
G01J 4/04, G01N 21/23, G01N 21/27
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:
B07C 3/14, G06K 7/10, G06K 9/32
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:
G01B 11/26, G01D 5/347
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 5/26, G01D 5/34, G01D 5/347
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP11823496

LASER BEAM REGULATOR DEVICE, LASER BEAM ENERGY STABILIZATION DEVICE, LASER BEAM REGULATION METHOD, AND LASER BEAM ENERGY STABILIZATION METHOD

IPC classification:
G02F 1/35
Applicant:
The University of Tokushima
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
APPLICATION WITHDRAWN
EP13179619

Fixing device and method for fixing for a lightcurtainhousing

IPC classification:
F16B 3/00, G01D 11/30, G01V 8/10
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:
F16P 3/14, G01B 11/25
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 1/42, G01J 3/02, G01J 3/42
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
EP11188054

Method and sensor, in particular camera for determining distances

IPC classification:
G01S 17/46
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION REFUSED
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:
G01D 5/244, G01D 11/24, H02G 3/08
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 7/481, G01S 7/483, G01S 17/89
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION REFUSED
EP12178686

Camera system and method for recording a flow of objects

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

Laser scanner for navigating a vehicle

IPC classification:
G01C 21/12, G01S 7/481, G01S 7/497, G01S 17/06, G01S 17/42
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 21/17, G01N 21/35
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
EP10856946

PLASMA PROCESSING APPARATUS

IPC classification:
C23C 16/505, H01J 37/32, H01L 21/205, H01L 21/3065, H05H 1/46
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
GRANT OF PATENT INTENDED
EP13179809

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

IPC classification:
G05B 9/02, G05B 19/042
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:
B23K 1/00, B23K 1/005, B23K 20/00, H01L 23/00, H05K 3/10, H05K 3/22
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP11871690

SPUTTERING THIN FILM FORMING APPARATUS

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

Two-channel measuring device

IPC classification:
G01J 3/427, G01N 21/31, G01N 21/33, G01N 21/35
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 21/62, G01N 23/225
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 7/481, G01S 7/486, G01S 17/02, G01S 17/42, G01S 17/88
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
OPPOSITION REJECTED
EP12182737

Safety laser scanner

IPC classification:
G01S 17/88, G01S 17/95
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 3/00, G02B 19/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP12178652

Stator coupling

IPC classification:
F16D 1/12, G01D 5/347
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 3/00, G02B 19/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13187159

Spectrometer for gas analysis

IPC classification:
G01J 3/02, G01J 3/12, G01J 3/26, G01J 3/42, G01J 3/433, G01N 21/17, G01N 21/35
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:
G01V 8/22, G06K 7/10
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 5/14, G01D 5/244
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 3/08, F16P 3/14
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
EP11753370

SPUTTERING DEVICE

IPC classification:
C23C 14/34, H01J 37/34
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP14187100

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

IPC classification:
F16D 1/05, F16D 1/095
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 7/481, G01S 17/42, G01S 17/88
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP13844486

SPECTRAL CHARACTERISTIC MEASUREMENT DEVICE

IPC classification:
G01J 3/45, G01N 21/27, G01N 21/35
Applicant:
Kagawa University
Agent:
Christoph Ludewigt, http://www.ludewigt.de/
Status:
GRANT OF PATENT INTENDED
EP14163146

Method for welding a packaging and packaging machine

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

LIGHT SENSOR

IPC classification:
G01S 7/51, G01S 17/02, G01S 17/08, G01S 17/48, G01V 8/12, H03K 17/94
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:
G01J 3/42, G01N 21/27, G01N 21/31, G01N 21/35
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:
G05B 9/02, G05B 19/042, G05B 19/05, G05B 19/418, H01H 47/00
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:
G01D 5/28, G01D 5/30, G01J 9/00
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
EP12168056

Transmission and receiver unit and rotary encoder with such

IPC classification:
G01D 5/34
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13152429

Light source for a sensor and distance measuring optoelectronic sensor

IPC classification:
F21V 8/00, G01B 11/14, G01S 7/481, G01S 17/42, G02B 6/00, G02B 6/27, G02B 6/35, G02B 13/06, G02B 26/00
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP12173211

Optoelectronic sensor element

IPC classification:
G01D 5/34, G01J 4/04, G02B 5/30, H01L 31/0216
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:
G01B 11/02, G02B 3/00, G02B 3/14, G02B 26/08, G06K 7/00, H01L 27/146, H04N 13/04
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
PATENT GRANTED
EP14187404

Illumination device

IPC classification:
F21V 14/00, G02B 3/14, G02B 26/08, G06K 7/10
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:
EXAMINATION IN PROGRESS
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:
B65G 49/04, C25D 7/06, C25D 17/00, C25D 21/12
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:
G01F 1/66, G01N 29/024
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:
G01B 9/02, G01D 5/245, G01D 5/26, G01S 7/491
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
EXAMINATION IN PROGRESS
EP11191174

Device for measuring the relative angle of two objects which can be rotated relative to each other around a rotation axis

IPC classification:
G01D 5/34
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP11182548

Adjustment device

IPC classification:
H04N 5/225
Applicant:
SICK AG
Agent:
Christoph Ludewigt, SICK AG
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP15162508

POSITION MEASURING SYSTEM

IPC classification:
F15B 15/28, G01B 7/02, G01D 5/48
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 1/66, G01F 1/74
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:
G01B 3/12, G01D 11/30
Applicant:
Sick Stegmann GmbH
Agent:
Christoph Ludewigt, SICK AG
Status:
APPLICATION PUBLISHED
EP16157769

MEASURING DEVICE FOR MEASURING A PATH AND/OR A SPEED

IPC classification:
G01B 3/12, G01D 11/30
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:
EXAMINATION REQUESTED
EP15188258

OPTOELECTRONIC SENSOR

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

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