Granted Patent
Utility
US 5,534,595 · App. 08/468,316
Syndiotactic propylene copolymer, preparation of the same, and resin composition containing the same
Inventors:
Tadashi Asanuma, Hiroshi Matsuzawa, Tateyo Sasaki, Kaoru Kawanishi
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Jun 6, 1995
Inventors
Tadashi Asanuma
Hiroshi Matsuzawa
Tateyo Sasaki
Kaoru Kawanishi
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.