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Patent Assignment Assignor Details
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Assignor Name : GROTH, STEFAN
Total Assignments: 16
Assignment: 1
Reel/Frame:008750/0484   Pages: 2
Recorded: 08/07/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GROTH, STEFAN
Exec Dt:
06/24/1997
2
PEDAIN, JOSEF
Exec Dt:
06/20/1997
3
SCHMALSTIEG, LUTZ
Exec Dt:
06/16/1997
4
SCHUTZE, DETLEF-INGO
Exec Dt:
06/12/1997
Assignee
1
BAYER AKTIENGESELLSCHAFT
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6624282
US20020177682
08908655
Correspondence name and address
BAYER CORPORATION
RICHARD E. L. HENDERSON
PATENT DEPT.
100 BAYER ROAD
PITTSBURGH, PA 15205
Assignment: 2
Reel/Frame:009129/0017   Pages: 2
Recorded: 04/03/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GROTH, STEFAN
Exec Dt:
02/28/1998
2
KOBUSCH, CLAUS
Exec Dt:
03/03/1998
3
SCHMALSTIEG, LUTZ
Exec Dt:
02/28/1998
4
PUPPE, LOTHAR
Exec Dt:
03/05/1998
5
ENGBERT, THEODOR
Exec Dt:
03/12/1998
6
BOCK, MANFRED
Exec Dt:
03/12/1998
7
JONSCHKER, GERHARD
Exec Dt:
03/17/1998
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT UND LIZENZEN
KONZERNBEREIGH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5998504
NONE
09054590
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205
Assignment: 3
Reel/Frame:009829/0259   Pages: 2
Recorded: 03/16/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BOCK, MANFRED
Exec Dt:
02/16/1999
2
ENGBERT, THEODOR
Exec Dt:
02/22/1999
3
GROTH, STEFAN
Exec Dt:
02/11/1999
4
KLINKSIEK, BERND
Exec Dt:
02/18/1999
5
YESKE, PHILIP
Exec Dt:
02/15/1999
6
JONSCHKER, GERHARD
Exec Dt:
03/02/1999
7
DELLWO, ULRIKE
Exec Dt:
02/25/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT UND LIZENZEN
KONZERNBEREICH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6020419
NONE
09268851
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
100 BAYER ROAD
PITTSBURGH, PA 15205
Assignment: 4
Reel/Frame:009993/0991   Pages: 2
Recorded: 05/25/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
RICHTER, FRANK
Exec Dt:
04/25/1999
2
STELTER, EBERHARD
Exec Dt:
04/27/1999
3
LITZ, WILFRIED
Exec Dt:
05/05/1999
4
GROTH, STEFAN
Exec Dt:
04/23/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
KONZERNBEREICH RP - PATENT UND LIZENZEN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6090939
NONE
09318537
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 5
Reel/Frame:009994/0012   Pages: 2
Recorded: 05/25/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
RICHTER, FRANK
Exec Dt:
04/25/1999
2
GROTH, STEFAN
Exec Dt:
04/23/1999
3
STELTER, EBERHARD
Exec Dt:
04/27/1999
4
LITZ, WILFRIED
Exec Dt:
05/05/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT UND LIZENZEN
KONZERNBEREICH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6107484
NONE
09320366
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 6
Reel/Frame:010416/0488   Pages: 2
Recorded: 11/24/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MECHTEL, MARKUS
Exec Dt:
09/30/1999
2
GROTH, STEFAN
Exec Dt:
09/30/1999
3
SCHMALSTIEG, LUTZ
Exec Dt:
09/30/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
KONZERNBEREICH RP PATENT UND LIZENZEN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6288198
NONE
09449109
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 7
Reel/Frame:010418/0910   Pages: 2
Recorded: 12/01/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GROTH, STEFAN
Exec Dt:
11/22/1999
2
HALPAAP, REINHARD
Exec Dt:
11/22/1999
3
MECHTEL, MARKUS
Exec Dt:
11/22/1999
4
SCHMALSTIEG, LUTZ
Exec Dt:
11/22/1999
5
YESKE, PHILIP E.
Exec Dt:
11/23/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT UND LIZENZEN
KONZERNBEREICH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6281322
NONE
09451539
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 8
Reel/Frame:011744/0325   Pages: 3
Recorded: 03/02/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GROTH, STEFAN
Exec Dt:
01/09/2001
2
MAZANEK, JAN
Exec Dt:
01/16/2001
3
LANGEL, ROLF
Exec Dt:
01/24/2001
4
SCHUTZE, DETLEF-INGO
Exec Dt:
01/10/2001
5
URBAN, JURGEN
Exec Dt:
01/10/2001
Assignee
1
BAYER AKTIENGESELLSCHAFT
KONZERNBERICH RP
PATENT UND LIZEN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6548615
NONE
09786554
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 9
Reel/Frame:012538/0481   Pages: 2
Recorded: 01/23/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GERTZMANN, ROLF
Exec Dt:
11/08/2001
2
SCHMALSTIEG, LUTZ
Exec Dt:
11/13/2001
3
GROTH, STEFAN
Exec Dt:
11/09/2001
Assignee
1
BAYER AKTIENGESELLSCHAFT
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6559274
US20020132965
09974939
Correspondence name and address
BAYER CORP.
THOMAS W. ROY
PATENT DEPT.
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 10
Reel/Frame:013732/0703   Pages: 3
Recorded: 02/03/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LUDEWIG, MICHAEL
Exec Dt:
01/01/2003
2
MATNER, MATHIAS
Exec Dt:
01/07/2003
3
GROTH, STEFAN
Exec Dt:
01/09/2003
4
RUTTMANN, GERHARD
Exec Dt:
01/06/2003
Assignee
1
BAYER AKTIENGESELLSCHAFT
D 51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6762270
US20030153712
10357002
Correspondence name and address
BAYER CORPORATION
JOSEPH C. GIL
100 BAYER ROAD
PATENT DEPARTMENT
PITTSBURGH, PA 15205
Assignment: 11
Reel/Frame:036611/0685   Pages: 4
Recorded: 09/21/2015
Attorney Dkt #:074023-0635-US-531233
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SANDERS, JOSEF
Exec Dt:
08/21/2015
2
HECKING, ANDREAS
Exec Dt:
08/26/2015
3
HALPAAP, REINHARD
Exec Dt:
08/28/2015
4
RICHTER, FRANK
Exec Dt:
08/21/2015
5
WILMES, OSWALD
Exec Dt:
09/01/2015
6
BUSCH, JAN
Exec Dt:
09/01/2015
7
LODDENKEMPER, TIM
Exec Dt:
08/27/2015
8
STEFFENS, FRIEDHELM
Exec Dt:
08/24/2015
9
GROTH, STEFAN
Exec Dt:
08/21/2015
Assignee
1
BAYER MATERIALSCIENCE AG
ALFRED-NOBEL-STR. 10
MONHEIM AM RHEIN, GERMANY 40789
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10131641
US20160031834
14774305
Correspondence name and address
DRINKER BIDDLE & REATH LLP (WM)
222 DELAWARE AVENUE, STE. 1410
WILMINGTON, DE 19801-1621
Assignment: 12
Reel/Frame:049607/0851   Pages: 8
Recorded: 06/27/2019
Attorney Dkt #:COV161140PCT01-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
IRLE, CHRISTOPH
Exec Dt:
03/28/2019
2
GROTH, STEFAN
Exec Dt:
03/28/2019
3
WU, RUIWEN
Exec Dt:
04/03/2019
4
MIDOLO, ANTONIO
Exec Dt:
04/03/2019
5
MALEIKA, ROBERT
Exec Dt:
03/28/2019
6
LI, HONGCHAO
Exec Dt:
04/01/2019
7
LIU, HAO
Exec Dt:
04/01/2019
Assignee
1
COVESTRO DEUTSCHLAND AG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10730997
US20190270843
16344972
Correspondence name and address
COVESTRO LLC
1 COVESTRO CIRCLE
PITTSBURGH, PA 15205
Assignment: 13
Reel/Frame:050179/0080   Pages: 7
Recorded: 08/27/2019
Attorney Dkt #:COV161139PCT01-US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
IRLE, CHRISTOPH
Exec Dt:
05/16/2019
2
GROTH, STEFAN
Exec Dt:
05/20/2019
3
WU, RUIWEN
Exec Dt:
05/20/2019
4
MIDOLO, ANTONIO
Exec Dt:
05/20/2019
5
MALEIKA, ROBERT
Exec Dt:
08/14/2019
6
LI, HONGCHAO
Exec Dt:
05/20/2019
7
LIU, HAO
Exec Dt:
05/20/2019
Assignee
1
COVESTRO DEUTSCHLAND AG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10752728
US20190270842
16344967
Correspondence name and address
COVESTRO LLC
1 COVESTRO CIRCLE
PITTSBURGH, PA 15205
Assignment: 14
Reel/Frame:051300/0160   Pages: 3
Recorded: 12/17/2019
Attorney Dkt #:2017P30061WOUS
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GROTH, STEFAN
Exec Dt:
09/02/2019
2
WU, RUIWEN
Exec Dt:
09/02/2019
3
MIDOLO, ANTONIO
Exec Dt:
09/02/2019
Assignee
1
COVESTRO DEUTSCHLAND AG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11091431
US20200115328
16623423
Correspondence name and address
COVESTRO LLC
1 COVESTRO CIRCLE
PITTSBURGH, PA 15205
Assignment: 15
Reel/Frame:054944/0582   Pages: 20
Recorded: 01/18/2021
Attorney Dkt #:2018P30082WOUS01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MERKEL, MICHAEL
Exec Dt:
10/09/2020
2
WILMES, OSWALD
Exec Dt:
10/08/2020
3
DRUMM, CHRISTIAN
Exec Dt:
10/08/2020
4
WU, RUIWEN
Exec Dt:
10/26/2020
5
GROTH, STEFAN
Exec Dt:
10/26/2020
6
FAN, WENBIN
Exec Dt:
10/12/2020
Assignee
1
COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20210284787
17261073
Correspondence name and address
COVESTRO LLC
1 COVESTRO CIRCLE
PITTSBURGH, PA 15205
Assignment: 16
Reel/Frame:059468/0060   Pages: 14
Recorded: 04/01/2022
Attorney Dkt #:2019P30043WOUS
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MERKEL, MICHAEL
Exec Dt:
01/17/2022
2
GROSSE DALDRUP, ANNA
Exec Dt:
03/31/2022
3
EGGERT, CHRISTOPH
Exec Dt:
01/17/2022
4
GROTH, STEFAN
Exec Dt:
01/20/2022
5
MEURESCH, MARKUS
Exec Dt:
01/20/2022
6
GROETZNER, MONIKA
Exec Dt:
01/21/2022
7
NOLTE, STEFAN
Exec Dt:
01/19/2022
Assignee
1
COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20220267500
17625271
Correspondence name and address
COVESTRO LLC
1 COVESTRO CIRCLE
PITTSBURGH, PA 15205

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