Granted Patent
Utility
US 4,945,149 · App. 07/229,727
Coating composition a non-porous moisture-permeable coating layer or film of a hydrophilic polyurethane resin
Inventors:
Yukio Matsumoto, Nobuaki Kunii
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Aug 2, 1988
Inventors
Yukio Matsumoto
Nobuaki Kunii
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.