IP Library Assignment 029832/0353
Patent Assignment
Reel/Frame 029832/0353

Assignment of Assignor's Interest

Recorded: 2013-02-19 Pages: 3
Assignors
CASTRO, DAVID J.
Executed: 2013-02-18
CHENG, WEIGUO
Executed: 2013-02-18
Assignee
NALCO COMPANY
1601 W. DIEHL ROAD, NAPERVILLE, ILLINOIS, 60563
Covered Property (1)
Method of Increasing Paper Strength by Using Natural Gums and Dry Strength Agent in the Wet End
Patent: 9,181,657 →
Application: 13/731,311 →
Publication: US 2014/0182800
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Sep 20, 2017
From: NALCO COMPANY
To: NALCO COMPANY LLC
Reel/Frame 043924/0587 →
Assignment of Assignor's Interest Nov 1, 2017
From: NALCO COMPANY LLC
To: ECOLAB USA INC.
Reel/Frame 044347/0104 →