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Patent Assignment Assignor Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Assignor Name : TONTRUP, CHRISTOPH
Total Assignments: 10
Assignment: 1
Reel/Frame:021816/0435   Pages: 4
Recorded: 11/11/2008
Attorney Dkt #:332364US0PCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TONTRUP, CHRISTOPH
Exec Dt:
08/01/2008
2
GRINSCHGL, BRIGITTE
Exec Dt:
09/05/2008
3
HEISELER, ANNE
Exec Dt:
09/05/2008
4
MEYER, JUERGEN
Exec Dt:
09/10/2008
Assignee
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STR. 1-11
ESSEN, GERMANY 45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20090266273
12299395
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 2
Reel/Frame:022561/0745   Pages: 3
Recorded: 04/17/2009
Attorney Dkt #:333066US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TONTRUP, CHRISTOPH
Exec Dt:
11/28/2008
2
TRETTIN, REINHARD
Exec Dt:
12/05/2008
3
GEYER, MICHAEL
Exec Dt:
02/06/2009
Assignee
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STR. 1-11
ESSEN, GERMANY 45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20090301350
12299479
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 3
Reel/Frame:022617/0610   Pages: 4
Recorded: 04/30/2009
Attorney Dkt #:339493US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
VON RYMON LIPINSKI, TADEUSZ
Exec Dt:
04/01/2009
2
TONTRUP, CHRISTOPH
Exec Dt:
04/07/2009
3
LORTZ, WOLFGANG
Exec Dt:
04/09/2009
4
BATZ-SOHN, CHRISTOPH
Exec Dt:
04/20/2009
Assignee
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STR. 1-11
ESSEN, GERMANY 45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8303702
US20100029463
12446588
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 4
Reel/Frame:022927/0413   Pages: 5
Recorded: 07/08/2009
Attorney Dkt #:COC.P59944
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TONTRUP, CHRISTOPH
Exec Dt:
05/15/2009
2
LORTZ, WOLFGANG
Exec Dt:
05/28/2009
3
SCHUMACHER, KAI
Exec Dt:
06/09/2009
4
HUEBSCH, CHRISTIAN
Exec Dt:
05/09/2009
5
WIELAND, PHILIPP
Exec Dt:
06/21/2009
6
GRASSL, HARALD
Exec Dt:
04/08/2009
7
BECHER, KERSTIN
Exec Dt:
04/09/2009
8
SCHEUL, STEFANIE
Exec Dt:
04/09/2009
9
JETZLSPERGER, EVA
Exec Dt:
04/21/2009
Assignee
1
CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
DR.-ALBERT-FRANK-STRASSE 32
TROSTBERG, GERMANY 83308
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20090272296
12298425
Correspondence name and address
CURATOLO SIDOTI CO., LPA
24500 CENTER RIDGE ROAD
SUITE 280
WESTLAKE, OH 44145
Assignment: 5
Reel/Frame:024138/0360   Pages: 4
Recorded: 03/25/2010
Attorney Dkt #:355681US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KATUSIC, STIPAN
Exec Dt:
01/29/2010
2
TONTRUP, CHRISTOPH
Exec Dt:
02/08/2010
3
MOERTERS, MARTIN
Exec Dt:
02/15/2010
4
KATERINAK, WITOLD
Exec Dt:
02/16/2010
Assignee
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STR. 1-11
ESSEN, GERMANY 45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20100204033
12678616
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 6
Reel/Frame:024552/0172   Pages: 4
Recorded: 06/17/2010
Attorney Dkt #:359034US0XPCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ANEZIRIS, CHRISTOS G.
Exec Dt:
04/30/2010
2
KLIPPEL, UWE
Exec Dt:
04/30/2010
3
TONTRUP, CHRISTOPH
Exec Dt:
05/19/2010
Assignees
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STRASSE 1-11
ESSEN, GERMANY 45128
2
TECHNISCHE UNIVERSITAET BERGAKADEMIE FREIBERG - INSTITUT FUER KERAMIK, GLAS - UND BAUSTOFFTECHNIK
AGRICOLASTRASSE 17
FREIBERG, GERMANY 09596
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8450229
US20100273636
12747384
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 7
Reel/Frame:025003/0112   Pages: 12
Recorded: 09/17/2010
Attorney Dkt #:032301.670
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BERGEMANN, KLAUS
Exec Dt:
06/16/2010
2
DANNEHL, MANFRED
Exec Dt:
06/11/2010
3
OELMANN, ANSGAR
Exec Dt:
08/02/2010
4
SCHWARTZE, BRITTA
Exec Dt:
06/13/2010
5
TONTRUP, CHRISTOPH
Exec Dt:
06/24/2010
Assignee
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STRASSE 1-11
ESSEN, GERMANY DE-45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8420044
US20110076608
12883585
Correspondence name and address
MICHAEL A. MAKUCH
1130 CONNECTICUT AVENUE, N.W.,SUITE 1130
SMITH, GAMBRELL & RUSSELL, LLP
WASHINGTON, DC 20036
Assignment: 8
Reel/Frame:027440/0622   Pages: 4
Recorded: 12/23/2011
Attorney Dkt #:388070US99XPCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TONTRUP, CHRISTOPH
Exec Dt:
11/17/2011
2
LORTZ, WOLFGANG
Exec Dt:
11/17/2011
3
PERLET, GABRIELE
Exec Dt:
11/17/2011
4
SCHMIDT-KLUGE, ERICH
Exec Dt:
10/28/2011
5
FRULLI, DANILO
Exec Dt:
11/02/2011
Assignees
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STR. 1-11
ESSEN, GERMANY 45128
2
CENTER FOR ABRASIVES AND REFRACTORIES RESEARCH & DEVELOPMENT C.A.R.R.D. GMBH
SEEBACHER ALLEE 64
VILACH, AUSTRIA 9524
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8778449
US20120111224
13266512
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 9
Reel/Frame:027782/0179   Pages: 3
Recorded: 02/29/2012
Attorney Dkt #:394538US99XPCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TONTRUP, CHRISTOPH
Exec Dt:
12/22/2011
2
LORTZ, WOLFGANG
Exec Dt:
01/20/2012
3
PERLET, GABRIELE
Exec Dt:
01/23/2012
Assignee
1
EVONIK DEGUSSA GMBH
RELLINGHAUSER STR. 1-11
ESSEN, GERMANY 45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120156370
13391953
Correspondence name and address
OBLON, SPIVAK, ET AL.
1940 DUKE STREET
ALEXANDRIA, VA 22314
Assignment: 10
Reel/Frame:061876/0700   Pages: 5
Recorded: 11/25/2022
Attorney Dkt #:7601/22807
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GIESSELER, MAREIKA
Exec Dt:
07/08/2022
2
GOLCHERT, RAINER
Exec Dt:
08/11/2022
3
MÜHLIG, NINA
Exec Dt:
09/29/2022
4
LYGIN, ALEXANDER
Exec Dt:
07/08/2022
5
AUL, WOLFGANG
Exec Dt:
08/01/2022
6
RENGER, TOBIAS
Exec Dt:
07/11/2022
7
TONTRUP, CHRISTOPH
Exec Dt:
07/08/2022
Assignee
1
EVONIK OPERATIONS GMBH
RELLINGHAUSER STRASSE 1-11
ESSEN, GERMANY 45128
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20230286814
17927040
Correspondence name and address
MICHAEL A. SANZO
15400 CALHOUN DRIVE
SUITE 125
ROCKVILLE, MD 20855

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