Granted Patent
Utility
US 6,242,573 · App. 09/431,669
Method of producing water-insolubilized regenerated collagen fiber
Inventors:
Masaoki Goto, Shinichi Sakashita, Kunihiko Matsumura
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Nov 1, 1999
Inventors
Masaoki Goto
Shinichi Sakashita
Kunihiko Matsumura
Assignee (at issue)
KANEKA CORPORATION
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.