IP Library › Assignment 005155/0590
Patent Assignment
Reel/Frame 005155/0590

Assignment of Assignors Interest.

Recorded: 1989-10-10 Pages: 3
Assignors
KUYPERS, MARTINUS H.
Executed: 1989-09-29
STEEGHS, GERARDUS F. J.
Executed: 1989-09-29
BRINKMANN, EGBERT
Executed: 1989-09-29
Assignee
PPG BIOMEDICAL SYSTEMS, INC.
PITTSBURGH, PENNSYLVANIA
Covered Property (1)
Method of Providing a Substrate with a Layer Comprising a Polyvinyl Based Hydrogel and a Biochemically Active Material
Patent: 5,134,057 →
Application: 07/419,310 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger May 21, 1990
From: PPG BIOMEDICAL SYSTEMS, INC., A CORP. OF DE.
To: PPG INDUSTRIES, INC., A CORP. OF PA.
Reel/Frame 005368/0234 →
Assignment of Assignors Interest. Sep 3, 1991
From: PPG INDUSTRIES, INC.
To: DRAGER NEDERLAND B.V.
Reel/Frame 005822/0550 →