Granted Patent
Utility
US 5,969,043 · App. 09/054,578
Powder coating of epoxy resin and epoxidized polydiene block polymer
Inventors:
Riichiro Maruta, Takako Watanabe, Yojiro Yamamoto
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Apr 3, 1998
Inventors
Riichiro Maruta
Takako Watanabe
Yojiro Yamamoto
Assignee (at issue)
SHELL OIL COMPANY
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.