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Patent Assignment Assignor Details
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Assignor Name : KEUL, HELMUT
Total Assignments: 11
Assignment: 1
Reel/Frame:004672/0127   Pages: 1
Recorded: 02/24/1987
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
LEITZ, EDGAR
Exec Dt:
02/10/1987
2
LINDNER, CHRISTIAN
Exec Dt:
02/10/1987
3
EICHENAUER, HERBERT
Exec Dt:
02/10/1987
4
OTT, KARL-HEINZ
Exec Dt:
02/10/1987
5
BUYSCH, HANS-JOSEF
Exec Dt:
02/10/1987
6
MUES, PETER
Exec Dt:
02/10/1987
7
HOCKER, HARTWIG
Exec Dt:
02/06/1987
8
KEUL, HELMUT
Exec Dt:
02/06/1987
Assignee
1
BAYER AKTIENGESELLSCHAFT, LEVERKUSEN, GERMANY, A CORP. OF GERMANY
DELAWARE
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4754017
NONE
07017879
Correspondence name and address
CONNOLLY AND HUTZ
P.O. BOX 2207
WILMINGTON, DE 19899-2207
Assignment: 2
Reel/Frame:004672/0126   Pages: 1
Recorded: 02/24/1987
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
KEUL, HELMUT
Exec Dt:
02/10/1987
2
EICHENAUER, HERBERT
Exec Dt:
02/06/1987
3
LINDNER, CHRISTIAN
Exec Dt:
02/06/1987
4
MULLER, FRIEDEMANN
Exec Dt:
02/06/1987
5
HOCKER, HARTWIG
Exec Dt:
02/10/1987
Assignee
1
BAYER AKTIENGESELLSCHAFT, LEVERKUSEN, GERMANY, A CORP. OF GERMANY
DELAWARE
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4801632
NONE
07017878
Correspondence name and address
CONNOLLY AND HUTZ
P.O. BOX 2207
WILMINGTON, DE 19899-2207
Assignment: 3
Reel/Frame:005613/0261   Pages: 2
Recorded: 02/19/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
HOCKER, HARTWIG
Exec Dt:
12/17/1990
2
KEUL, HELMUT
Exec Dt:
12/17/1990
3
LEITZ, EDGAR
Exec Dt:
12/07/1990
4
SCHON, NORBERT
Exec Dt:
12/04/1990
5
KUHLING, STEFFEN
Exec Dt:
12/04/1990
Assignee
1
BAYER AKTIENGESELLSCHAFT, LEVERKUSEN, GERMANY, A CORP. OF GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5116918
NONE
07657410
Correspondence name and address
CONNOLLY AND HUTZ
P. O. BOX 2207
WILMINGTON, DE 19899-2207
Assignment: 4
Reel/Frame:009837/0608   Pages: 2
Recorded: 03/18/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MELCHIORS, MARTIN
Exec Dt:
02/17/1999
2
MARGOTTE, DIETER
Exec Dt:
02/15/1999
3
HOCKER, HARTWIG
Exec Dt:
02/18/1999
4
KEUL, HELMUT
Exec Dt:
02/18/1999
5
NEUMANN, ANDREAS
Exec Dt:
02/18/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT UND LIZENZEN
KONZERNBEREICH RP
D 51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6455645
US20020103320
09272044
Correspondence name and address
BAYER CORPORATION
DIDERICO VAN EYL
100 BAYER ROAD
PATENT DEPARTMENT
PITTSBURGH, PA 15205-9741
Assignment: 5
Reel/Frame:011458/0636   Pages: 2
Recorded: 01/16/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MELCHIORS, MARTIN
Exec Dt:
09/25/2000
2
HOCKER, HARTWIG
Exec Dt:
10/05/2000
3
KEUL, HELMUT
Exec Dt:
10/09/2000
4
ACHTEN, DIRK
Exec Dt:
10/10/2000
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENTE UND LIZENZEN
KONZERNBEREICH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6573346
NONE
09652075
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
100 BAYER RD.
PITTSBURGH, PA 15205-9741
Assignment: 6
Reel/Frame:011408/0499   Pages: 2
Recorded: 12/26/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MELCHIORS, MARTIN
Exec Dt:
09/25/2000
2
HOCKER, HARTWIG
Exec Dt:
09/10/2000
3
KEUL, HELMUT
Exec Dt:
10/10/2000
4
ACHTEN, DIRK
Exec Dt:
10/05/2000
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENTE UND LIZENZEN
KONZERNBEREICH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6632895
NONE
09652203
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 7
Reel/Frame:012084/0317   Pages: 2
Recorded: 05/18/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEISSE, HILMAR
Exec Dt:
01/25/2001
2
KEUL, HELMUT
Exec Dt:
02/01/2001
3
HOCKER, HARTWIG
Exec Dt:
01/31/2001
Assignee
1
MEMBRANA GMBH
OHDER STRASSE 28
D-42289 WUPPERTAL, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6451921
US20010021764
09785193
Correspondence name and address
OLIFF & BERRIDGE, PLC
WILLIAM P. BERRIDGE
P.O. BOX 19928
ALEXANDRIA, VIRGINIA 22320
Assignment: 8
Reel/Frame:013480/0276   Pages: 9
Recorded: 11/13/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WENNEIS, WOLFFRIED
Exec Dt:
08/19/2002
2
HOFFMANN, HARALD
Exec Dt:
09/03/2002
3
SEVERICH, BIRGIT
Exec Dt:
08/14/2002
4
HOCKER, HARTWIG
Exec Dt:
09/09/2002
5
KEUL, HELMUT
Exec Dt:
09/05/2002
Assignee
1
CARL FREUDENBERG KG
HOEHNERWEG 2-4
D-69469 WEINHEIM, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7407728
US20030049539
10236434
Correspondence name and address
KENYON & KENYON
RICHARD L. MAYER
ONE BROADWAY
NEW YORK, NY 10004
Assignment: 9
Reel/Frame:018370/0336   Pages: 5
Recorded: 10/10/2006
Attorney Dkt #:14368-00001-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KEUL, HELMUT
Exec Dt:
08/17/2006
2
MOELLER, MARTIN
Exec Dt:
08/17/2006
3
PASQUIER, NICOLAS
Exec Dt:
08/17/2006
4
UBAGHS, LUC
Exec Dt:
08/17/2006
Assignee
1
DEUTSCHES WOLLFORSCHUNGSINSTITUT AN DER RWTH AACHEN E.V.
VELTMANPLATZ 8
AACHEN, GERMANY 52062
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7728069
US20070092656
10582053
Correspondence name and address
ASHLEY I. PEZZNER
1007 NORTH ORANGE STREET
P.O. BOX 2207
WILMINGTON, DE 19899-2207
Assignment: 10
Reel/Frame:035162/0235   Pages: 8
Recorded: 03/13/2015
Attorney Dkt #:0815969.00004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHATTOPADHYAY, SUBRATA
Exec Dt:
02/18/2014
2
MOELLER, MARTIN
Exec Dt:
02/18/2014
3
KEUL, HELMUT
Exec Dt:
02/18/2014
4
DURKA, MAXIME
Exec Dt:
01/22/2014
5
BUDZYNSKI, JAMES
Exec Dt:
01/17/2015
Assignee
1
DEVAN CHEMICALS NV
KLEIN FRANKRIJK 18
RONSE-RENAIX, BELGIUM B-9600
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9493475
US20150218177
14426561
Correspondence name and address
ANDREW L. REIBMAN
K&L GATES LLP
599 LEXINGTON AVENUE
NEW YORK, NY 10022
Assignment: 11
Reel/Frame:042539/0336   Pages: 9
Recorded: 05/31/2017
Attorney Dkt #:GIL-42151
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WAGNER, ROLAND
Exec Dt:
04/15/2017
2
DUSSAUD, ANNE
Exec Dt:
03/31/2017
3
STACHULLA, KARL-HEINZ
Exec Dt:
04/19/2017
4
WENSKE, CHRISTIAN
Exec Dt:
04/19/2017
5
STREICHER, KATHARINA
Exec Dt:
04/27/2017
6
MOELLER, MARTIN
Exec Dt:
04/26/2017
7
KOERNER, ANDREA
Exec Dt:
04/24/2017
8
DITTRICH, BARBARA
Exec Dt:
04/24/2017
9
HEEDFELD, ROBIN
Exec Dt:
04/19/2017
10
POPESCU, CRISAN
Exec Dt:
04/26/2017
11
KEUL, HELMUT
Exec Dt:
04/24/2017
12
ZHU, XIAOMIN
Exec Dt:
04/25/2017
13
ER-RAFIK, MÉRIEM
Exec Dt:
04/27/2017
14
SUN, KUNSHAN
Exec Dt:
03/30/2017
Assignee
1
MOMENTIVE PERFORMANCE MATERIALS GMBH
KAISER-WILHELM ALLEE. GEBÄUDE V 7
LEVERKUSEN, GERMANY 51368
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10266656
US20170291994
15512623
Correspondence name and address
RANKIN, HILL & CLARK LLP
23755 LORAIN ROAD - SUITE 200
NORTH OLMSTED, OH 44070-2224

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