Granted Patent
Utility
US 6,720,374 · App. 10/153,589
Aliphatic polyester composition and flexible products
Inventors:
Kazuyuki Sashida, Tadashi Hasebe
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: May 24, 2002
Inventors
Kazuyuki Sashida
Tadashi Hasebe
Assignee (at issue)
Riken Vitamin 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.