Granted Patent
Utility
US 6,503,313 · App. 09/725,173
Graft copolymer and composition thereof
Inventors:
Shuichi Matakawa, Toshihiko Abe
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Nov 29, 2000
Inventors
Shuichi Matakawa
Toshihiko Abe
Assignee (at issue)
Fuji Kasei Kogyo 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.