Granted Patent
Utility
US 6,316,574 · App. 09/581,838
Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element
Inventors:
Satoshi Tanioka, Shizuo Murata, Itsuo Shimizu, Kazumi Ito
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Jun 19, 2000
Inventors
Satoshi Tanioka
Shizuo Murata
Itsuo Shimizu
Kazumi Ito
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.