Granted Patent
Utility
US 5,419,851 · App. 08/211,625
Difluoro-derivative compounds and liquid crystal compositions containing them
Inventors:
Osamu Yokokoji, Jun Irisawa, Hidemasa Koh
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Apr 20, 1994
Inventors
Osamu Yokokoji
Jun Irisawa
Hidemasa Koh
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.