IP Library › Assignment 012240/0354
Patent Assignment
Reel/Frame 012240/0354

Assignment of Assignor's Interest

Recorded: 2001-10-05 Pages: 4
Assignors
PIERRAT, CHRISTOPHE
Executed: 2001-10-04
COTE, MICHEL LUC
Executed: 2001-10-04
Assignee
NUMERICAL TECHNOLOGIES, INC.
70 W. PLUMERIA DRIVE, SAN JOSE, CALIFORNIA, 95134
Covered Property (1)
Exposure Control for Phase Shifting Photolithographic Masks
Patent: 6,852,471 →
Application: 09/972,428 →
Publication: US 2002/0187636
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Feb 4, 2005
From: SYNOPSYS MERGER HOLDINGS LLC
To: SYNOPSYS, INC.
Reel/Frame 015653/0738 →
Assignment of Assignor's Interest Dec 23, 2009
From: NUMERICAL TECHNOLOGIES, INC.
To: SYNOPSYS MERGER HOLDINGS LLC
Reel/Frame 023695/0307 →