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Patent Assignment Assignor Details
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Assignor Name : DAHLENBURG, OLAF
Total Assignments: 9
Assignment: 1
Reel/Frame:026833/0061   Pages: 4
Recorded: 08/30/2011
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOLBERG, THOMAS
Exec Dt:
07/25/2011
2
SCHONFELDER, ECKART
Exec Dt:
08/12/2011
3
DAHLENBURG, OLAF
Exec Dt:
07/25/2011
4
WALTER, MANFRED
Exec Dt:
07/25/2011
Assignee
1
CHEMETALL GMBH
TRAKEHNER STRASSE 3
FRANKFURT AM MAIN, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9364855
US20110226159
13131106
Correspondence name and address
JAMES R. CRAWFORD
FULBRIGHT & JAWORSKI L.L.P.
666 FIFTH AVENUE
NEW YORK, N.Y. 10103
Assignment: 2
Reel/Frame:038428/0598   Pages: 3
Recorded: 04/13/2016
Attorney Dkt #:OZ-13004 US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MROCHEM, MARTIN
Exec Dt:
09/12/2015
2
SPECHT, JÜRGEN
Exec Dt:
09/12/2015
3
WIETZORECK, HARDY
Exec Dt:
09/12/2015
4
DAHLENBURG, OLAF
Exec Dt:
10/12/2015
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3
FRANKFURT AM MAIN, GERMANY D-60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150361382
14766515
Correspondence name and address
ALBEMARLE CORPORATION
451 FLORIDA STREET
BATON ROUGE, LA 70801-1765
Assignment: 3
Reel/Frame:044460/0607   Pages: 7
Recorded: 12/21/2017
Attorney Dkt #:27843-1192 170554US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DAHLENBURG, OLAF
Exec Dt:
10/19/2017
2
HOLLMANN, FRANK
Exec Dt:
10/17/2017
3
DROEGE, MICHAEL
Exec Dt:
10/19/2017
4
KOLBERG, THOMAS
Exec Dt:
10/19/2017
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11492707
US20180334748
15562653
Correspondence name and address
PATENT DOCKET DEPARTMENT ARMSTRONG TEASD
7700 FORSYTH BOULEVARD
SUITE 1800
ST. LOUIS, MO 63105
Assignment: 4
Reel/Frame:044460/0826   Pages: 5
Recorded: 12/21/2017
Attorney Dkt #:27843-1193 170559US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DAHLENBURG, OLAF
Exec Dt:
10/19/2017
2
HOLLMANN, FRANK
Exec Dt:
10/17/2017
3
SCHMEIER, LISA
Exec Dt:
10/19/2017
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10738383
US20180112313
15562970
Correspondence name and address
PATENT DOCKET DEPARTMENT ARMSTRONG TEASD
7700 FORSYTH BOULEVARD
SUITE 1800
ST. LOUIS, MO 63105
Assignment: 5
Reel/Frame:062891/0318   Pages: 8
Recorded: 03/06/2023
Attorney Dkt #:27843-1500 170787US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DAHLENBURG, OLAF
Exec Dt:
06/05/2018
2
KOLBERG, THOMAS
Exec Dt:
06/11/2018
3
SCHMEIER, LISA
Exec Dt:
06/13/2018
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3,
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11643731
US20200199758
16640581
Correspondence name and address
CHRISTOPHER M. GOFF
ARMSTRONG TEASDALE LLP
7700 FORSYTH BLVD., SUITE 1800
ST. LOUIS, MO 63105
Assignment: 6
Reel/Frame:047130/0956   Pages: 7
Recorded: 10/11/2018
Attorney Dkt #:27843-1320 170572US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DAHLENBURG, OLAF
Exec Dt:
07/30/2018
2
SCHMEIER, LISA
Exec Dt:
07/30/2018
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11124880
US20190127854
16091294
Correspondence name and address
PATENT DOCKET DEPARTMENT
ARMSTRONG TEASDALE LLP
7700 FORSYTH BLVD., SUITE 1800
ST. LOUIS, MO 63105
Assignment: 7
Reel/Frame:047131/0256   Pages: 8
Recorded: 10/11/2018
Attorney Dkt #:27843-1193 170559US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DAHLENBURG, OLAF
Exec Dt:
08/28/2018
2
HOLLMANN, FRANK
Exec Dt:
08/28/2018
3
SCHMEIER, LISA
Exec Dt:
08/29/2018
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10738383
US20180112313
15562970
Correspondence name and address
PATENT DOCKET DEPARTMENT
ARMSTRONG TEASDALE LLP
7700 FORSYTH BLVD., SUITE 1800
ST. LOUIS, MO 63105
Assignment: 8
Reel/Frame:063345/0077   Pages: 8
Recorded: 04/17/2023
Attorney Dkt #:171380US01 (27843-1571)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DAHLENBURG, OLAF
Exec Dt:
09/17/2018
2
WIETZORECK, HARDY
Exec Dt:
09/04/2018
3
SPECHT, JUERGEN
Exec Dt:
09/04/2018
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3,
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20210062346
16964861
Correspondence name and address
CHRISTOPHER M. GOFF
ARMSTRONG TEASDALE LLP
7700 FORSYTH BLVD., SUITE 1800
ST. LOUIS, MO 63105
Assignment: 9
Reel/Frame:056042/0481   Pages: 8
Recorded: 04/26/2021
Attorney Dkt #:27843-1742 170777US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KHELFALLAH, NAWEL SOUAD
Exec Dt:
02/07/2019
2
DAHLENBURG, OLAF
Exec Dt:
02/18/2019
3
SEIDER, LISA
Exec Dt:
04/12/2021
Assignee
1
CHEMETALL GMBH
TRAKEHNER STR. 3
FRANKFURT, GERMANY 60487
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20210340676
17282665
Correspondence name and address
ARMSTRONG TEASDALE LLP
7700 FORSYTH BLVD.
SUITE 1800
ST. LOUIS, MO 63105

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