Patent Assignment
Reel/Frame 003810/0446
Assignment of Assignors Interest.
Recorded: 1980-11-17
Pages: 2
Assignor
FRIGI-GRIFFIN, INC.
Executed: 1980-05-01
Assignee
AMERICAN OPTICAL CORPORATION, A CORP. OF DE.
SOUTHBRIDGE, MASSACHUSETTS, 01550
Covered Properties
(2)
Graft of Hydroxyalkyl Methacrylate Onto Polyvinylpyrrolidone
Patent:
3,621,079 →
Application:
04/769,032 →
Copolymer of Hydroxyalkyl Methacrylate and Polyvinylpyrrolidone
Patent:
29,231 →
Application:
05/307,183 →
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
May 27, 1982
From: WARNER-LAMBERT COMPANY A CORP.OF DE
To: AO, INC. 14 MECHANIC ST., A CORP. OF DE
Reel/Frame 004001/0461 →
Security Interest
Jun 3, 1982
From: AO, INC., A DE CORP.
To: WARNER-LAMBERT TECHNOLOGIES, INC.; WARNER-LAMBERT CANADA, INC.
Reel/Frame 004073/0046 →
Assignment of Assignors Interest.
Aug 11, 1982
From: AO, INC.
To: IRVING TRUST COMPANY
Reel/Frame 004073/0675 →
Assignment of Assignors Interest.
Feb 10, 1986
From: AMERICAN OPTICAL CORPORATION, A CORP OF DE.; AD, INC.
To: CIBA-U.S., CIBA-GEIGY CORPORATION
Reel/Frame 004510/0050 →
Assignment of Assignor's Interest
Feb 7, 2017
From: KLEMM, NILS; WAGENER, SILKE
To: KLEMM+SOHN GMBH & CO. KG
Reel/Frame 041194/0101 →