Granted Patent
Utility
US 5,585,460 · App. 08/270,791
Biodegradable high-molecular polymers, production and use thereof
Inventors:
Minoru Yamada, Toshiro Heya, Yasuaki Ogawa
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Jul 5, 1994
Inventors
Minoru Yamada
Toshiro Heya
Yasuaki Ogawa
Assignee (at issue)
Takeda Chemical Industries 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.