Granted Patent
Utility
US 5,672,785 · App. 08/390,422
Process for producing 1,1-dichloro-12,2,2-tetrafluoroethane
Inventors:
Shinsuke Morikawa, Shunichi Samejima, Masaru Yoshitake, Shin Tatematsu
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Feb 17, 1995
Inventors
Shinsuke Morikawa
Shunichi Samejima
Masaru Yoshitake
Shin Tatematsu
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.