Granted Patent
Utility
US 5,374,685 · App. 08/177,338
Syndiotactic propylene copolymer, method for preparing same, and its use
Inventors:
Tadashi Asanuma, Kazuhiko Yamamoto
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: Jan 4, 1994
Inventors
Tadashi Asanuma
Kazuhiko Yamamoto
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.