Granted Patent
Utility
US 5,548,007 · App. 08/400,449
Radiation-resistant polypropylene resin composition
Inventors:
Tadashi Asanuma, Shigeru Kimura, Nobutaka Uchikawa, Tetsunosuke Shiomura
Patented Case
View Patent ↗
Granted: Aug 20, 1996
Filed: Mar 7, 1995
Inventors
Tadashi Asanuma
Shigeru Kimura
Nobutaka Uchikawa
Tetsunosuke Shiomura
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.