Granted Patent
Utility
US 6,015,873 · App. 08/883,505
Polyphenol composition and method of producing the same
Inventors:
Mareki Miura, Yoshinobu Ohnuma
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Jun 26, 1997
Inventors
Mareki Miura
Yoshinobu Ohnuma
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.