IP Library Assignment 017832/0130
Patent Assignment
Reel/Frame 017832/0130

Assignment of Assignor's Interest

Recorded: 2006-06-23 Pages: 5
Assignors
MCKENNA, JAMES MICHAEL
Executed: 2006-06-18
WRIGLEY, DAVID J.
Executed: 2006-05-29
SMITH, EDWARD MAXWELL DE BRANT
Executed: 2006-05-30
Assignee
E. I. DU PONT DE NEMOURS AND COMPANY
1007 MARKET STREET, LEGAL-PATENTS, WILMINGTON, DELAWARE, 19898
Covered Property (1)
Polyester Elastomer and Compositions Thereof
Patent: 7,638,591 →
Application: 11/393,227 →
Publication: US 2006/0235187
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jun 26, 2019
From: E. I. DU PONT DE NEMOURS AND COMPANY
To: DUPONT POLYMERS, INC.
Reel/Frame 049590/0650 →
Change of Name Feb 11, 2026
From: DUPONT POLYMERS, INC.
To: CELANESE POLYMERS HOLDING, INC.
Reel/Frame 074734/0498 →