Patent Assignment
Reel/Frame 006231/0434
A Corrective Assignment to Correct Assignee on Reel 5443 Frame 541
Recorded: 1992-07-14
Pages: 6
Assignee
GELMAN SCLIENCES INC.
A CORP. OF MI, 600 SOUTH WAGNER, ANN ARBOR, MICHIGAN, 48106
Covered Property
(1)
Process for Treating a Porous Substrate to Achieve Improved Water and Oil Repellency
Patent:
5,156,780 →
Application:
07/554,263 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Sep 17, 1990
From: KENIGSBERG, YITZCHAK; SHCHORI, EHUD
To: GELMAN SCIENCES TECHNOLOGY, INC.
Reel/Frame 005443/0541 →
Security Interest
Nov 1, 1991
From: GELMAN SCIENCES, INC., A CORP. OF MI
To: NBD BANK, N.A.
Reel/Frame 005897/0628 →
Collateral Assignment
Apr 27, 1993
From: GELMAN SCIENCES, INC. A MICHIGAN CORPORATION
To: NBD BANK, N.A.
Reel/Frame 006537/0374 →
Statement of Change-Security Interest
Mar 23, 1998
From: NBD BANK, N.A.
To: GELMAN SCIENCES, INC.
Reel/Frame 009052/0838 →
Assignment of Assignor's Interest
Mar 27, 1998
From: GELMAN SCIENCES, INC.
To: PALL CORPORATION
Reel/Frame 009146/0135 →