Granted Patent
Utility
US 6,348,244 · App. 09/529,989
Liquid-crystal compounds having large negative value of permittivity anisotropy, liquid-crystal composition, and liquid-crystal display element
Inventors:
Kazutoshi Miyazawa, Hiroyuki Takeuchi, Yasuhiro Kubo, Fusayuki Takeshita, Etsuo Nakagawa
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Apr 24, 2000
Inventors
Kazutoshi Miyazawa
Hiroyuki Takeuchi
Yasuhiro Kubo
Fusayuki Takeshita
Etsuo Nakagawa
Assignee (at issue)
Chisso Corporation
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.