Granted Patent
Utility
US 5,821,319 · App. 08/627,037
Liquid crystal polyamide-imide copolymer
Inventors:
Atsushi Shibuya, Yuichi Okawa, Shoji Tamai, Masahiro Ohta, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: Apr 3, 1996
Inventors
Atsushi Shibuya
Yuichi Okawa
Shoji Tamai
Masahiro Ohta
Akihiro Yamaguchi
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.