Granted Patent
Utility
US 4,795,798 · App. 07/018,496
High-temperature adhesive polyimide from 2,2-bis[4-(3-amino phenoxy)phenyl]1,1,1,3,3,3-hexafluoro propane
Inventors:
Shoji Tamai, Saburo Kawashima, Masahiro Ohta, Hideaki Oikawa, Kouji Ohkoshi, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Jan 3, 1989
Filed: Feb 25, 1987
Inventors
Shoji Tamai
Saburo Kawashima
Masahiro Ohta
Hideaki Oikawa
Kouji Ohkoshi
Akihiro Yamaguchi
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.