Patent Assignment
Reel/Frame 020923/0415
Assignment of Assignor's Interest
Recorded: 2008-05-09
Pages: 4
Assignors
LAURA S CHADWICK
Executed: 2008-04-25
JAMES A CULP
Executed: 2008-04-28
DAVID J HATHAWAY
Executed: 2008-04-23
ANTHONY D POLSON
Executed: 2008-04-30
Assignee
INTERNATIONAL BUSINESS MACHINE CORP
NEW ORCHARD ROAD, ARMONK, NEW YORK, 10504
Covered Property
(1)
Method of Laying Out Integrated Circuit Design Based on Known Polysilicon Perimeter Densities of Individual Cells
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 1, 2013
From: INTERNATIONAL BUSINESS MACHINES CORPORATION
To: MENTOR GRAPHICS CORPORATION
Reel/Frame 029733/0156 →
Merger and Change of Name
Jun 18, 2021
From: MENTOR GRAPHICS CORPORATION; SIEMENS INDUSTRY SOFTWARE INC.
To: SIEMENS INDUSTRY SOFTWARE INC.
Reel/Frame 057261/0545 →