Patent Assignment
Reel/Frame 006426/0744
Assignment of Assignors Interest.
Recorded: 1993-02-19
Pages: 4
Assignee
HOECHST CELANESE CORPORATION
ROUTE 202-206, SOMERVILLE, NEW JERSEY, 08876
Covered Property
(1)
Fine Polybenzimidazole-Containing Particles
Patent:
5,223,550 →
Application:
07/888,935 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jul 9, 1992
From: HUGHES, O. RICHARD; KURSCHUS, DIETER
To: HOECHST CELANESE CORPORATION
Reel/Frame 006218/0301 →
Assignment of Assignor's Interest
Apr 19, 1999
From: HOECHST CELANESE CORPORATION
To: CELANESE ACETATE LLC
Reel/Frame 009901/0364 →
Assignment of Assignor's Interest
Oct 13, 2005
From: CELANESE ACETATE LLC
To: CNA HOLDINGS, INC.
Reel/Frame 016630/0718 →
Assignment of Assignor's Interest
Oct 14, 2005
From: CNA HOLDINGS, INC.
To: CELANESE ADVANCED MATERIALS, INC.
Reel/Frame 016641/0084 →
Assignment of Assignor's Interest
Oct 14, 2005
From: CELANESE ADVANCED MATERIALS, INC.
To: PBI PERFORMANCE PRODUCTS, INC.
Reel/Frame 016641/0102 →