Granted Patent
Utility
US 5,607,912 · App. 07/942,328
Hydrochlorofluorocarbon azeotropic or azeotropic-like mixture
Inventors:
Shunichi Samejima, Kenroh Kitamura, Naohiro Watanabe, Teruo Asano, Toru Kamimura, Yoko Usami
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Sep 9, 1992
Inventors
Shunichi Samejima
Kenroh Kitamura
Naohiro Watanabe
Teruo Asano
Toru Kamimura
Yoko Usami
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.