IP Library › Assignment 028253/0752
Patent Assignment
Reel/Frame 028253/0752

Assignment of Assignor's Interest

Recorded: 2012-05-23 Pages: 7
Assignors
FIELD, LESLIE A.
Executed: 2012-04-27
SANCHEZ, ROBERT JOSEPH, JR.
Executed: 2012-04-26
RICKARD, MATTHEW J.A.
Executed: 2012-05-21
Assignee
ALCON RESEARCH, LTD.
6201 SOUTH FREEWAY, FORT WORTH, TEXAS, 76134
Covered Property (1)
Pre-Biased Membrane Valve
Patent: 8,858,491 →
Application: 13/478,169 →
Publication: US 2013/0317413
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger Dec 11, 2019
From: ALCON RESEARCH, LTD.
To: ALCON RESEARCH, LLC
Reel/Frame 051257/0562 →
Confirmatory Deed of Assignment Effective April 8, 2019 Dec 14, 2019
From: ALCON RESEARCH, LLC
To: ALCON INC.
Reel/Frame 051293/0444 →