Patent Assignment
Reel/Frame 007799/0756
Assignment of Assignor's Interest
Recorded: 1995-11-28
Pages: 3
Assignee
DURFERRIT GMBH THERMOTECHNIK
INDUSTRIESTRASSE 3, D-68169 MAANNHEIM, GERMANY
Covered Property
(1)
Method for the Pre-Treatment of Steel Parts Prior to Salt Bath Nitriding
Patent:
5,735,971 →
Application:
08/563,547 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
May 20, 1999
From: DUFERRIT GMBH THERMOTECHNIK
To: HOUGHTON DURFERRIT GMBH
Reel/Frame 009958/0510 →
Assignment of Assignor's Interest
Nov 4, 1999
From: DURFERRIT GMBH THERMOTECHNIK
To: HOUGHTON DURFERRIT GMBH
Reel/Frame 010351/0748 →
Assignment of Assignor's Interest
Apr 18, 2000
From: DEGUSSA AKTIENGESELLSCHAFT
To: DEGUSSA-HULS AKTIENGESELLSCHAFT
Reel/Frame 010719/0914 →