Granted Patent
Utility
US 4,904,772 · App. 07/252,315
Mixed hydrophobe polymers
Inventor:
Arjun C. Sau
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Oct 3, 1988
Inventor
Arjun C. Sau
Assignee (at issue)
Aqualon Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.