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Patent Assignment Assignor Details
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Assignor Name : PIRKL, HANS-GEORG
Total Assignments: 18
Assignment: 1
Reel/Frame:007614/0555   Pages: 4
Recorded: 08/15/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HEUER, LUTZ
Exec Dt:
07/28/1995
2
JOENTGEN, WINFRIED
Exec Dt:
07/27/1995
3
GROTH, TORSTEN
Exec Dt:
07/27/1995
4
TRAENCKNER, HANS-JOACHIM
Exec Dt:
08/02/1995
5
MULLER, NIKOLAUS
Exec Dt:
07/27/1995
6
UHR, HERMANN
Exec Dt:
07/28/1995
7
HEISE, KLAUS-PETER
Exec Dt:
07/27/1995
8
BRUCHER, KARL-HERMANN
Exec Dt:
07/28/1995
9
WESENER, JOACHIM-REINHARD
Exec Dt:
08/01/1995
10
WOLLBORN, UTE
Exec Dt:
07/28/1995
11
PIRKL, HANS-GEORG
Exec Dt:
08/04/1995
12
MENZEL, THOMAS
Exec Dt:
08/07/1995
13
LIESENFELDER, ULRICH
Exec Dt:
08/04/1995
14
WAGNER, PAUL
Exec Dt:
08/03/1995
Assignee
1
BAYER AG KONZERNVERWALTUNG RP
PATENTE KONZERN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5679761
NONE
08515356
Correspondence name and address
WILLIAM E. MCSHANE
CONNOLLY AND HUTZ
P.O. BOX 2207
WILMINGTON, DE 19899
Assignment: 2
Reel/Frame:008173/0820   Pages: 2
Recorded: 10/09/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIRKL, HANS-GEORG
Exec Dt:
12/11/1995
2
SCHOMACKER, REINHARD
Exec Dt:
12/18/1995
3
KLINGLER, UWE
Exec Dt:
12/11/1995
4
SCHIEB, THOMAS
Exec Dt:
12/15/1995
5
WIECHERS, GERHARD
Exec Dt:
12/12/1995
6
ZIMMERMANN, JURGEN
Exec Dt:
01/02/1996
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENTE KONZERN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5616818
NONE
08543095
Correspondence name and address
BAYER CORPORATION
LYNDANNE M. WHALEN
PATENT DEPT.
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 3
Reel/Frame:008304/0175   Pages: 3
Recorded: 11/12/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GROTH, TORSTEN
Exec Dt:
10/24/1996
2
JOENTGEN, WINFRIED
Exec Dt:
10/24/1996
3
DOBERT, FRANK
Exec Dt:
10/25/1996
4
HEISE, KLAUS-PETER
Exec Dt:
10/24/1996
5
MENZEL, THOMAS
Exec Dt:
10/29/1996
6
PENTLING, URSULA
Exec Dt:
11/05/1996
7
PIRKL, HANS-GEORG
Exec Dt:
10/30/1996
8
WAGNER, PAUL
Exec Dt:
10/25/1996
9
WEINSCHENCK, JOERGEN
Exec Dt:
10/28/1996
Assignee
1
BAYER AG
KONZERNVERWALTUNG RP
PATENTE KONZERN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6054553
NONE
08745812
Correspondence name and address
CONNOLLY AND HUTZ
WILLIAM E. MCSHANE
P.O. BOX 2207
WILMINGTON, DE 19899
Assignment: 4
Reel/Frame:009668/0201   Pages: 2
Recorded: 12/23/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KLINGLER, UWE
Exec Dt:
11/16/1998
2
PIRKL, HANS-GEORG
Exec Dt:
12/01/1998
3
SCHIEB, THOMAS
Exec Dt:
11/12/1998
4
WASTIAN, DIETMAR
Exec Dt:
12/03/1998
Assignee
1
BAYER AKTIENGESELLSCHAFT
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6528690
US20030028056
09169087
Correspondence name and address
BAYER CORPORATION
DONNA J. VEATCH
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 5
Reel/Frame:013374/0161   Pages: 2
Recorded: 08/07/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KLEIN, STEPHAN
Exec Dt:
07/03/2002
2
GROTJOHANN, DIRK
Exec Dt:
06/26/2002
3
MENDOZA-FROHN, CHRISTINE
Exec Dt:
07/04/2002
4
KOCH, DANIEL
Exec Dt:
07/08/2002
5
MUELLER, HEINZ-HERBERT
Exec Dt:
07/08/2002
6
PIRKL, HANS-GEORG
Exec Dt:
07/08/2002
7
UCHDORF, RUDOLF
Exec Dt:
07/10/2002
8
WEGENER, GERHARD
Exec Dt:
07/12/2002
Assignee
1
BAYER AKTIENGESELLSCHAFT
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6649798
US20030023116
10203250
Correspondence name and address
BAYER CORPORATION
DONNA J. VEATCH
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 6
Reel/Frame:014561/0334   Pages: 2
Recorded: 09/26/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOCH, DANIEL
Exec Dt:
07/10/2003
2
PIRKL, HANS-GEORG
Exec Dt:
07/09/2003
3
HAGEN, TORSTEN
Exec Dt:
07/11/2003
4
WERSHOFEN, STAFAN
Exec Dt:
07/14/2003
Assignee
1
BAYER AKTIENGESELLSCHAFT
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7041776
US20040092701
10672440
Correspondence name and address
BAYER POLYMERS LLC
100 BAYER ROAD
PATENT DEPARTMENT
PITTSBURGH, PA 15205-9741
Assignment: 7
Reel/Frame:015626/0299   Pages: 3
Recorded: 07/21/2004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIRKL, HANS-GEORG
Exec Dt:
06/24/2004
2
LIMAN, ULRICH
Exec Dt:
06/29/2004
3
VIELER, ROBERT
Exec Dt:
07/01/2004
4
ECHTERHOFF, RALF
Exec Dt:
06/04/2004
Assignee
1
BAYER MATERIALSCIENCE AG
D 51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7038002
US20050020797
10896129
Correspondence name and address
BAYER MATERIALSCIENCE LLC
LYNDANNE M. WHALEN
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 8
Reel/Frame:015678/0468   Pages: 3
Recorded: 08/16/2004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAHRENHOLTZ, JOCHEN
Exec Dt:
06/10/2004
2
WIMSCHNEIDER, ANDREA
Exec Dt:
06/11/2004
3
PIRKL, HANS-GEORG
Exec Dt:
07/01/2004
4
MULLER, HEINZ-HERBERT
Exec Dt:
06/09/2004
5
DRESELY, STEFAN
Exec Dt:
06/18/2004
6
BOLTON, JEFFREY
Exec Dt:
07/19/2004
7
SCHIFFHAUER, MARTIN
Exec Dt:
06/14/2004
8
WOLF, UDO
Exec Dt:
06/16/2004
9
SCHWEER, JOHANNES
Exec Dt:
06/17/2004
10
GERLACH, MARTIN
Exec Dt:
06/21/2004
Assignee
1
BAYER MATERIALSCIENCE AG
PATENTE UND LIZENZEN
D 51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7662634
US20050003553
10845727
Correspondence name and address
BAYER MATERIALSCIENCE, LLC
PATENT DEPARTMENT
N. DENISE BROWN
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 9
Reel/Frame:016682/0525   Pages: 3
Recorded: 06/13/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIRKL, HANS-GEORG
Exec Dt:
02/21/2005
2
BOLTON, JEFFREY
Exec Dt:
04/25/2005
3
MECKEL, WALTER
Exec Dt:
05/20/2005
4
WOLF, ULRICH
Exec Dt:
03/07/2005
5
WINTERMANTEL, MATTHIAS
Exec Dt:
02/23/2005
6
MAHRENHOLTZ, JOCHEN
Exec Dt:
03/02/2005
Assignee
1
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7495124
US20050222291
11048172
Correspondence name and address
N. DENISE BROWN
BAYER MATERIALSCIENCE LLC
PATENT DEPARTMENT100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 10
Reel/Frame:016994/0411   Pages: 5
Recorded: 09/16/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HAGEN, TORSTEN
Exec Dt:
07/23/2005
2
KOCH, DANIEL
Exec Dt:
08/02/2005
3
PIRKL, HANS-GEORG
Exec Dt:
08/02/2005
4
POHL, FRITZ
Exec Dt:
08/15/2005
5
WERSHOFEN, STEFAN
Exec Dt:
08/25/2005
6
UCHDORF, RUDOLF
Exec Dt:
07/08/2005
7
ADAMSON, RICHARD
Exec Dt:
08/08/2005
Assignee
1
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7253321
US20060287555
11170624
Correspondence name and address
N. DENISE BROWN
BAYER MATERIALSCIENCE LLC
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 11
Reel/Frame:017122/0657   Pages: 3
Recorded: 10/24/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WERSHOFEN, STEFAN
Exec Dt:
08/22/2005
2
SCHMIDT, MANFRED
Exec Dt:
08/29/2005
3
PIRKL, HANS-GEORG
Exec Dt:
09/05/2005
4
KAMIYAMA, NOBUHIRO
Exec Dt:
09/22/2005
5
MURAKAMI, SHINICHI
Exec Dt:
09/20/2005
6
HARADA, TETSUO
Exec Dt:
09/27/2005
Assignee
1
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8022200
US20060025557
11173482
Correspondence name and address
N. DENISE BROWN
BAYER MATERIALSCIENCE LLC
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 12
Reel/Frame:017339/0552   Pages: 3
Recorded: 12/08/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WERSHOFEN, STEFAN
Exec Dt:
09/19/2005
2
SCHMIDT, MANFRED
Exec Dt:
09/26/2005
3
PIRKL, HANS-GEORG
Exec Dt:
09/27/2005
4
HAGEN, TORSTEN
Exec Dt:
09/23/2005
Assignee
1
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7745659
US20060128928
11298727
Correspondence name and address
JOHN E. MROZINSKI, JR.
BAYER MATERIALSCIENCE LLC
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 13
Reel/Frame:020084/0927   Pages: 6
Recorded: 11/05/2007
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SOMMER, KNUT
Exec Dt:
09/26/2007
2
SCHWARZ, IDO
Exec Dt:
10/07/2007
3
BUCHHOLZ, SUSANNE
Exec Dt:
10/01/2007
4
LAGO, ANDRE
Exec Dt:
10/09/2007
5
ORZESEK, HOLGER
Exec Dt:
10/09/2007
6
GEHLEN, FRANZ-ULRICH VON
Exec Dt:
09/26/2007
7
WILKE, KARL-HEINZ
Exec Dt:
10/18/2007
8
PIRKL, HANS-GEORG
Exec Dt:
10/15/2007
9
LEHNER, PETER
Exec Dt:
10/09/2007
10
SCHUBERT, STEPHAN
Exec Dt:
09/26/2007
Assignee
1
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9067864
US20080234518
11881014
Correspondence name and address
BAYER MATERIALSCIENCE LLC
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 14
Reel/Frame:028076/0323   Pages: 4
Recorded: 04/19/2012
Attorney Dkt #:15778-00413-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SCHMIDT, MANFRED
Exec Dt:
01/22/2012
2
VIELER, ROBERT
Exec Dt:
01/11/2012
3
FELSKE, ERNST
Exec Dt:
01/09/2012
4
PIRKL, HANS-GEORG
Exec Dt:
12/21/2011
5
KRAUSE, JENS
Exec Dt:
01/03/2012
6
VILBERT, ARNAUD
Exec Dt:
03/22/2012
Assignees
1
BAYER MATERIALSCIENCE AG
PATENTS & LICENSING
BUILDING Q 18
LEVERKUSEN, GERMANY D-51368
2
BAULE S.A.S.
46, AVENUE DES ALLOBROGES
ROMANS SUR ISERE, FRANCE 26100
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120202945
13382817
Correspondence name and address
CONNOLLY BOVE LODGE & HUTZ, LLP
1007 NORTH ORANGE STREET
WILMINGTON, DE 19801
Assignment: 15
Reel/Frame:029905/0700   Pages: 4
Recorded: 03/01/2013
Attorney Dkt #:15778-00448-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PIRKL, HANS-GEORG
Exec Dt:
01/07/2013
2
SCHMIDT, MANFRED
Exec Dt:
01/04/2013
3
VIELER, ROBERT
Exec Dt:
01/11/2013
4
TRACHT, URSULA
Exec Dt:
01/16/2013
5
WEUTA, PETER
Exec Dt:
01/05/2013
6
BUCHHOLZ, SIGURD
Exec Dt:
01/08/2013
Assignee
1
BAYER INTELLECTUAL PROPERTY GMBH
ALFRED-NOBEL-STRASSE 10
MONHEIM, GERMANY 40789
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8835591
US20130158291
13809639
Correspondence name and address
CLAUDIA SCHULTZE
P O BOX 2207
WILMINGTON, DE 19899-2207
Assignment: 16
Reel/Frame:035686/0652   Pages: 6
Recorded: 05/21/2015
Attorney Dkt #:074023-0615-US-526721
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
JACOBS, GUNDOLF
Exec Dt:
05/08/2015
2
ARNTZ, HANS-DETLEF
Exec Dt:
05/04/2015
3
PIRKL, HANS-GEORG
Exec Dt:
05/07/2015
4
SCHULZ, ANGELIKA
Exec Dt:
05/11/2015
Assignee
1
BAYER MATERIALSCIENCE AG
ALFRED-NOBEL-STR. 10
MONHEIM AM RHEIN, GERMANY 40789
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150307647
14646411
Correspondence name and address
DRINKER BIDDLE & REATH LLP (WM)
222 DELAWARE AVENUE, STE. 1410
WILMINGTON, DE 19801
Assignment: 17
Reel/Frame:038752/0639   Pages: 8
Recorded: 05/31/2016
Attorney Dkt #:074023-0676-US-541518
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HOFMANN, JOERG
Exec Dt:
02/09/2016
2
PIRKL, HANS-GEORG
Exec Dt:
02/16/2016
3
LAEMMERHOLD, KAI
Exec Dt:
02/12/2016
4
NEFZGER, HARTMUT
Exec Dt:
02/18/2016
5
WOHAK, MATTHIAS
Exec Dt:
02/09/2016
6
BRAUN, STEFANIE
Exec Dt:
02/16/2016
7
GUERTLER, CHRISTOPH
Exec Dt:
02/18/2016
8
WOLF, AUREL
Exec Dt:
02/18/2016
9
LANGANKE, JENS
Exec Dt:
02/24/2016
Assignee
1
COVESTRO DEUTSCHLAND AG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10125217
US20160264727
15030523
Correspondence name and address
DRINKER BIDDLE & REATH LLP (WM)
222 DELAWARE AVENUE, STE. 1410
WILMINGTON, DE 19801-1621
Assignment: 18
Reel/Frame:043365/0101   Pages: 3
Recorded: 08/23/2017
Attorney Dkt #:BMS151033US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BRASSAT, LUTZ
Exec Dt:
06/20/2017
2
POHLIG, RALF
Exec Dt:
06/22/2017
3
PIRKL, HANS-GEORG
Exec Dt:
06/22/2017
Assignee
1
COVESTRO DEUTSCHLAND AG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20180237577
15552846
Correspondence name and address
COVESTRO LLC
1 COVESTRO CIRCLE
PITTSBURGH, PA 15205

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