Granted Patent
Utility
US 5,436,056 · App. 08/107,776
Method of producing a high molecular weight aliphatic polyester and film thereof
Inventors:
Eiichiro Takiyama, Yoshitaka Hatano, Takashi Fujimaki, Shigekatu Seki, Takao Hokari, Tadayuki Hosogane, Noriaki Harigai
Patented Case
View Patent ↗
Granted: Jul 25, 1995
Filed: Aug 18, 1993
Inventors
Eiichiro Takiyama
Yoshitaka Hatano
Takashi Fujimaki
Shigekatu Seki
Takao Hokari
Tadayuki Hosogane
Noriaki Harigai
Assignee (at issue)
Showa Highpolymer Co., Ltd.
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.