IP Library › Assignment 021725/0034
Patent Assignment
Reel/Frame 021725/0034

Assignment of Assignor's Interest

Recorded: 2008-10-23 Pages: 2
Assignors
FREDERICK, KEVIN W
Executed: 2008-10-14
CHEN, SHIH-RUEY T
Executed: 2008-10-17
Assignee
WSP CHEMICALS & TECHNOLOGY, LLC
2301 DUSS AVENUE, SUITE 32, AMBRIDGE, PENNSYLVANIA, 15003
Covered Property (1)
Method of Treating a Formation
Patent: 8,640,774 →
Application: 12/032,859 →
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger Mar 17, 2015
From: WSP CHEMICALS & TECHNOLOGY, LLC
To: CHEMLOGICS GROUP, LLC
Reel/Frame 035180/0713 →
Merger Mar 17, 2015
From: CHEMLOGICS GROUP, LLC
To: SOLVAY USA INC.
Reel/Frame 035180/0833 →
Assignment of Assignor's Interest Oct 28, 2025
From: SOLVAY USA INC.
To: ENERGY SOLUTIONS (US) LLC
Reel/Frame 072702/0825 →