Granted Patent
Utility
US 6,340,779 · App. 09/308,640
Cement admixture, concrete, and process for producing fluorooxyalylene compounds
Inventors:
Genichirou Enna, Hiroki Fukuda, Yoshihiro Ohtsuka
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: May 28, 1999
Inventors
Genichirou Enna
Hiroki Fukuda
Yoshihiro Ohtsuka
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.