Patent Assignment
Reel/Frame 016561/0467
Assignment of Assignor's Interest
Recorded: 2005-09-21
Pages: 4
Assignor
IKOS SYSTEMS, INC.
Executed: 2005-08-26
Assignee
MENTOR GRAPHICS CORPORATION
8005 SW BOECKMAN DRIVE, WILSONVILLE, OREGON, 97070-7777
Covered Properties
(22)
Simulator System for Logic Design Validation
Patent:
4,527,249 →
Application:
06/436,162 →
Concurrent Fault Simulation for Logic Designs
Patent:
4,769,817 →
Application:
06/824,541 →
Stimulus Engine for a Logic Simulation System
Application:
06/878,458 →
Dual Delay Mode Pipelined Logic Simulator
Patent:
4,787,061 →
Application:
06/878,459 →
Glitch Detelction by Forcing the Output of a Simulated Logic Device to an Undfefined State
Patent:
4,787,062 →
Application:
06/878,552 →
Programmable Look Up System
Patent:
4,736,338 →
Application:
06/916,128 →
Stimulus Engine for a Logic Simulation System
Application:
07/349,932 →
High Speed Logic Simulation System with Stimulus Engine Using Independent Event Channels Selectivly Driven by Independent Stimulus Programs
Patent:
5,126,966 →
Application:
07/467,297 →
Pipe-Lined Static Router and Scheduler for Configurable Logic System Performing Simultaneous Communications and Computation
Patent:
5,659,716 →
Application:
08/344,723 →
Transition Analysis and Circuit Resynthesis Method and Device for Digital Circuit Modeling
Patent:
5,649,176 →
Application:
08/513,605 →
Logic Analysis System for Logic Emulation Systems
Patent:
5,802,348 →
Application:
08/574,259 →
Circuit Partitioning Technique for Use with Multiplexed Inter- Connections
Patent:
5,854,752 →
Application:
08/588,649 →
Programmable Multiplexing Input/Output Port
Patent:
5,847,578 →
Application:
08/780,527 →
Pipe Lined Static Router and Scheduler for Configurable Logic System Performing Simultaneous Communications and Computation
Patent:
5,850,537 →
Application:
08/806,542 →
Method for Avoiding Bus Contention in a Digital Circuit
Patent:
6,104,210 →
Application:
08/807,298 →
Transition Analysis and Circuit Resynthesis Method and Device for Digital Circuit Modeling
Patent:
6,009,531 →
Application:
08/863,963 →
Reconstruction Engine for a Hardware Circuit Emulator
Patent:
6,061,511 →
Application:
09/097,138 →
Logic Analysis System for Logic Emulation Systems
Patent:
6,223,148 →
Application:
09/133,959 →
Logic analysis system for logic emulation systems
Application:
09/804,504 →
Publication:
US 2001/0010036
Emulator with Switching Network Connections
Functional Verification of Logic and Memory Circuits with Multiple Asynchronous Domains
Patent:
6,817,001 →
Application:
10/103,617 →
Functional Verification of Logic and Memory Circuits with Multiple Asynchronous Domains
Patent:
7,143,377 →
Application:
10/701,598 →
Related Assignments
(21)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 6, 1995
From: SELVIDGE, CHARLES W.; AGARWAL, ANANT; BABB, JONATHAN; DAHL, MATTHEW L.
To: VIRTUAL MACHINE WORKS, INC.
Reel/Frame 007314/0192 →
Assignment of Assignor's Interest
Aug 10, 1995
From: SELVIDGE, CHARLES W.; DAHL, MATTHEW L.
To: VIRTUAL MACHINE WORKS, INC.
Reel/Frame 007625/0273 →
Assignment of Assignor's Interest
Dec 18, 1995
From: STEWART, WILLIAM K.; SELVIDGE, CHARLES W.; CROUCH, KENNETH; WONG, MARINA
To: VIRTUAL MACHINGE WORKS, INC.
Reel/Frame 007808/0290 →
Assignment of Assignor's Interest
May 20, 1996
From: AGARWAL, ANANT
To: VIRTUAL MACHINE WORKS
Reel/Frame 007958/0232 →
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
Apr 28, 1997
From: VIRTUAL MACHINE WORKS, INC.
To: IKOS SYSTEMS, INC.
Reel/Frame 008479/0181 →
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
Jun 26, 1997
From: STEWART, WILLIAM K.
To: IKOS SYSTEMS, INC.
Reel/Frame 008603/0310 →
Assignment of Assignor's Interest
Sep 19, 1997
From: SILICON SOLUTIONS CORPORATION
To: IKOS SYSTEMS, INC.
Reel/Frame 008709/0298 →
Assignment of Assignor's Interest
Sep 19, 1997
From: ZYCAD CORPORATION
To: IKOS SYSTEMS, INC.
Reel/Frame 008709/0341 →
Assignment of Assignor's Interest
Jun 12, 1998
From: MARANTZ, JOSHUA; SELVIDGE, CHARLEY; CROUCH, KEN; SENESKI, MARK E.
To: IKOS SYSTEMS, INC.
Reel/Frame 009253/0702 →
Assignment of Assignor's Interest
Jun 29, 1998
From: VIRTUAL MACHINE WORKS
To: IKOS SYSTEMS, INC.
Reel/Frame 009278/0322 →
Assignment of Assignor's Interest
Oct 28, 1998
From: AGARAWAL, ANANT (FOR VIRTUAL MACHINE WORKS)
To: IKOS SYSTEMS, INC.
Reel/Frame 009553/0896 →
Merger
Jul 26, 1999
From: VIRTUAL MACHINE WORKS, INC.
To: IKOS SYSTEMS, INC.
Reel/Frame 010113/0615 →
Merger
Feb 12, 2001
From: VIRTUAL MACHINE WORKS, INC.
To: IKOS SYSTEMS, INC.
Reel/Frame 011521/0648 →
Assignment of Assignor's Interest
Apr 24, 2001
From: GOODE, TERRY LEE
To: IKOS SYSTEMS, INC.
Reel/Frame 011779/0778 →
Assignment of Assignor's Interest
Jun 21, 2002
From: KUDLUGI, MURALIDHAR R.; SELVIDGE, CHARLES W.
To: IKOS SYSTEMS, INC.
Reel/Frame 013020/0657 →
Assignment of Assignor's Interest
Nov 6, 2003
From: KUDLUGI, MURALIDHAR R.; SELVIDGE, CHARLES W.
To: IKOS SYSTEMS, INC.
Reel/Frame 014685/0311 →
Merger and Change of Name
Mar 2, 2021
From: MENTOR GRAPHICS CORPORATION; SIEMENS INDUSTRY SOFTWARE INC.
To: SIEMENS INDUSTRY SOFTWARE INC.
Reel/Frame 055468/0023 →
Merger and Change of Name
Jun 16, 2021
From: MENTOR GRAPHICS CORPORATION; SIEMENS INDUSTRY SOFTWARE INC.
To: SIEMENS INDUSTRY SOFTWARE INC.
Reel/Frame 057279/0707 →