Granted Patent
Utility
US 5,591,817 · App. 08/210,082
Molded articles of syndiotactic polypropylene and method for preparing same
Inventors:
Tadashi Asanuma, Tateyo Sasaki, Mitsuru Ito, Tetusnosuke Shiomura
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Mar 18, 1994
Inventors
Tadashi Asanuma
Tateyo Sasaki
Mitsuru Ito
Tetusnosuke 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.