Granted Patent
Utility
US 4,959,440 · App. 07/006,513
Polymide for high-temperature adhesive
Inventors:
Shoji Tamai, Saburo Kawashima, Yoshiho Sonobe, Masahiro Ohta, Hideaki Oikawa, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Jan 23, 1987
Inventors
Shoji Tamai
Saburo Kawashima
Yoshiho Sonobe
Masahiro Ohta
Hideaki Oikawa
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.