Granted Patent
Utility
US 4,788,287 · App. 06/903,197
High performance water and oil repellant
Inventors:
Masashi Matsuo, Masayuki Tamura, Katsuji Ito
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Sep 3, 1986
Inventors
Masashi Matsuo
Masayuki Tamura
Katsuji Ito
Assignee (at issue)
ASAHI GLASS CO., LTD.
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.