Patent Assignment
Reel/Frame 004474/0512
Assignment of Assignors Interest.
Recorded: 1985-11-07
Pages: 1
Assignor
CONTROL DATA CORPORATION
Executed: 1985-10-28
Assignee
ZYCAD CORPORATION, A CORP. OF
DELAWARE
Covered Property
(1)
Simulator System for Logic Design Validation
Patent:
4,527,249 →
Application:
06/436,162 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Oct 22, 1982
From: VAN BRUNT, NICHOLAS P.
To: CONTROL DATA CORPORATION
Reel/Frame 004061/0313 →
Security Interest
Jan 14, 1997
From: ZYCAD CORPORATION, A DE CORP.
To: COAST BUSINESS CREDIT, A DIVISION OF SOUTHERN PACIFIC THRIFT & LOAN ASSOCIATION, A CORP. OF CA
Reel/Frame 008222/0306 →
Assignment of Assignor's Interest
May 5, 1997
From: ZYCAD CORPORATION
To: IKOS SYSTEMS, INC.
Reel/Frame 008495/0536 →
Reassignment and Release of Security Interest
Jun 18, 1997
From: COAST BUSINESS CREDIT, A DIVISION OF SOUTHERN PACIFIC THRIFT & LOAN ASSOCIATION
To: ZYCAD CORPORATION
Reel/Frame 008579/0067 →
Assignment of Assignor's Interest
Sep 21, 2005
From: IKOS SYSTEMS, INC.
To: MENTOR GRAPHICS CORPORATION
Reel/Frame 016561/0467 →