Patent Assignment
Reel/Frame 006538/0719
Assignment of Assignor's Interest
Recorded: 1993-02-16
Pages: 2
Assignor
BRUGGENDICK, HERMANN
Executed: 1993-01-29
Assignee
STEAG AKTIENGESELLSCHAFT
BISMARCKSTRASSE 54, 4300 ESSEN, GERMANY
Covered Property
(1)
Method and Arrangement for Purifying a Carbon-Containing Adsorption Medium
Patent:
5,405,812 →
Application:
07/977,417 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 5, 2000
From: STEAG AKTIENGESELLSCHAFT
To: STEAG ENCOTEC
Reel/Frame 011277/0863 →
Change of Name
Apr 8, 2008
From: STEAG ENCOTEC GMBH
To: EVONIK ENCOTEC GMBH
Reel/Frame 020793/0947 →
Change of Name
Apr 10, 2008
From: EVONIK ENCOTEC GMBH
To: EVONIK ENERGY SERVICES GMBH
Reel/Frame 020794/0089 →
Change of Name
Jan 25, 2012
From: EVONIK ENERGY SERVICES GMBH
To: STEAG ENERGY SERVICES GMBH
Reel/Frame 027594/0785 →