Granted Patent
Utility
US 5,498,657 · App. 08/296,469
Fluorine-containing polymer composition
Inventors:
Norihide Sugiyama, Atsushi Watakabe, Shunsuke Yokotsuka, Atsuo Hiroi, Masaki Naritomi, Naoko Shirota, Ko Aosaki, Masaru Nakamura
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Aug 26, 1994
Inventors
Norihide Sugiyama
Atsushi Watakabe
Shunsuke Yokotsuka
Atsuo Hiroi
Masaki Naritomi
Naoko Shirota
Ko Aosaki
Masaru Nakamura
Assignees (at issue)
ASAHI GLASS CO., LTD.
Iwaki Glass Company 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.