Representative before the EPO
Partner/Owner

Employment test 1 - 10 employees
Company dna kaufmann
no operation time available
Headquarter in Dresden
active in Legal Services and IP Consulting

We have observed 29 EP applications Sigfrid Kaufmann has served for within the last five+ years. (We consider all applications which have an EP A1 or A2 publication dated after June 22, 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:

EP12197389

Method for producing a ceramic workpiece

IPC classification:
G03F 7/00, B81C 99/00
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13709742

METHOD FOR STITCH-WELDING A FRONT FLANGE JOINT

IPC classification:
B23K 26/32, B23K 26/24, B23K 26/10
Applicant:
Volkswagen AG
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
GRANT OF PATENT INTENDED
EP13721588

LASER PROTECTION DEVICE IN THE SHAPE OF A FLEXIBLE CURTAIN-TYPE ELEMENT FOR DETECTING LASER RADIATION

IPC classification:
B23K 26/42, H01L 23/498, F16P 3/00, F16P 1/06, F16P 1/02
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION IN PROGRESS
EP13762386

METHOD AND DEVICE FOR ADJUSTING THE AMOUNTS OR THE PARTIAL PRESSURES OF TWO GASES IN A LIQUID

IPC classification:
A61M 1/16
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION IN PROGRESS
EP13759428

EXHAUST GAS FILTER DEVICE

IPC classification:
B01D 46/42, B01D 46/00
Applicant:
TZ Technisches Zentrum Entwicklungs- & Handelsgesellschaft mbH
Agent:
Winter Brandl Fürniss Hübner Röss Kaiser Polte Partnerschaft mbB
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION IN PROGRESS
EP14195763

Method and assembly for forming textile fabrics

IPC classification:
A41C 5/00, D06C 23/04
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
PATENT GRANTED
EP14154950

Slack line device

IPC classification:
A63B 7/08
Agent:
Carmen Steiniger, Patentanwaltskanzlei Dr. Steiniger
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
PATENT GRANTED
EP13771048

DEFIBRILLATOR SYSTEM

IPC classification:
A61N 1/39
Applicant:
Carl Gustav Carus Management GmbH
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP15158145

SAFETY SWITCH DEVICE FOR MONITORING A STROKE MOVEMENT

IPC classification:
H01H 3/16, H01H 3/14
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
PATENT GRANTED
EP12196871

Fishing rod holder

IPC classification:
A01K 97/10
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP14709533

DEVICE AND METHOD FOR THERMAL UTILISATION OF RESIDUAL MATERIAL

IPC classification:
B01J 19/00, C10L 5/46, C10L 9/00, C10L 9/08
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION IN PROGRESS
EP14722089

PROCESSING TOOL FOR THE THERMAL PROCESSING OF COMPONENTS

IPC classification:
B30B 15/06
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION REQUESTED
EP14724292

SCANNER DEVICE

IPC classification:
H02K 1/17, H02K 33/16, H02K 26/00, G02B 26/10, G02B 26/08
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
The patent has been granted
EP14723986

METHOD FOR SOLDERING A SANDWICH METAL SHEET TO A SOLID METAL SHEET USING A LASER BEAM

IPC classification:
B23K 26/32, B23K 26/08, B23K 26/06, B23K 1/19, B23K 1/005
Applicant:
Volkswagen AG
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
The patent has been granted
EP15181497

PAVING SYSTEM FOR RAILWAY LEVEL CROSSING

IPC classification:
E01C 9/04
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
PATENT GRANTED
EP13156878

Method and assembly for storing energy

IPC classification:
F25J 1/02, F25J 1/00, F02C 6/18, F02C 6/16, F01K 25/10, F01K 23/10, F01K 3/00
Applicant:
Institut für Luft- Und Kältetechnik gGmbH (ILK)
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP12163275

Microfluidic component and procedure for its manufacture

IPC classification:
B29C 67/00, B22F 3/105, F28F 3/12
Applicant:
Institut für Luft- Und Kältetechnik gGmbH (ILK)
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP15197431

WIND POWER PLANT

IPC classification:
F03D 5/06
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
APPLICATION PUBLISHED
EP11813671

DEVICE FOR AND METHOD OF JOINING WORKPIECES BY MEANS OF A LASER BEAM AND MOVABLE PRESSING ELEMENTS

IPC classification:
B23K 26/14, B23K 26/08, B23K 37/04, B23K 26/24, B23K 26/22, B23K 26/03, B23K 26/02
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
The patent has been granted
EP15709084

SYSTEM FOR ASSISTING A HELPER IN THE RESUSCITATION OF A PERSON WITH CIRCULATORY ARREST

IPC classification:
G06F 19/00
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION REQUESTED
EP16159082

ASSEMBLY FOR PERFORMING A METHOD FOR ELECTROCHEMICAL CHLORIDE EXTRACTION ON A CORROSION-DAMAGED REINFORCED CONCRETE SURFACE

IPC classification:
C04B 41/72
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
EXAMINATION REQUESTED
EP16184660

FLUID ENERGY MACHINE WITH ELECTROMAGNETICALLY COUPLED PISTONS

IPC classification:
B63H 1/32, F03B 17/06, F04B 17/04
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
Request for examination was made
EP17155217

WELDING METHOD AND DEVICE FOR JOINING OVERLAPPING SHEETS

IPC classification:
B23K 103/16, B23K 103/22, B23K 103/20, B23K 101/18, B23K 9/007, B23K 9/12, B23K 9/23, B23K 9/28, B23K 9/173
Applicant:
Brandenburg University of Applied Sciences (Fachhochschule Brandenburg)
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
The application has been published
EP17160912

CONSTRUCTION PLATFORM SYSTEM AND METHOD FOR ADDITIVE MANUFACTURING OF ONE MOULDED BODY

IPC classification:
B23K 26/342, B22F 3/105
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
Request for examination was made
EP17160904

METHOD AND INSTALLATION FOR ADDITIVE MANUFACTURING OF METALLIC MOULDED BODY

IPC classification:
B28B 1/00, B22F 3/105
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
The application has been published
EP17164906

WORK TABLE FOR ADDITIVE MANUFACTURING

IPC classification:
B29C 64/20, B33Y 30/00, B29C 67/00, B22F 3/105
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
Request for examination was made
EP16703058

MACHINING HEAD FOR MACHINING MATERIALS, COMPRISING AN ILLUMINATION UNIT COMPRISING MULTIPLE DEFLECTING ELEMENTS

IPC classification:
G02B 27/00, G02B 23/26, B23K 26/14, B23K 26/06, B23K 26/03
Applicant:
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
Request for examination was made
EP17174810

METHOD AND APPARATUS FOR COMBINING ADDITIVE MANUFACTURE AND SHAPING

IPC classification:
B21H 1/06, B23K 26/342, B23K 26/00, B21H 7/00, B22F 5/10, B33Y 30/00, B33Y 10/00, B22F 3/105
Applicant:
Brandenburg University of Technology (Brandenburgische Technische Universität Cottbus-Senftenberg)
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
The application has been published
EP16714221

LASER BEAM JOINING METHOD AND LASER MACHINING OPTICS

IPC classification:
B23K 26/073, B23K 26/067, B23K 26/06, B23K 1/005
Agent:
Sigfrid Kaufmann, Kaufmann Patent- und Rechtsanwälte
Status:
Request for examination was made

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