IP Library › Assignment 012251/0395
Patent Assignment
Reel/Frame 012251/0395

Assignment of Assignor's Interest

Recorded: 2001-10-09 Pages: 3
Assignors
LIU, YONG
Executed: 2001-10-03
LIU, HUA-YU
Executed: 2001-10-08
Assignee
NUMERICAL TECHNOLOGIES INC.
70 WEST PLUMERIA DRIVE, SAN JOSE, CALIFORNIA, 95134
Covered Property (1)
System and Method for Correcting 3D Effects in an Alternating Phase-Shifting Mask
Patent: 6,670,082 →
Application: 09/974,507 →
Publication: US 2003/0068564
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 →
Confirmation of Assignment Jan 13, 2010
From: NUMERICAL TECHNOLOGIES, INC.
To: SYNOPSYS MERGER HOLDINGS LLC
Reel/Frame 023774/0882 →