Granted Patent
Utility
US 6,071,991 · App. 09/010,288
Modified epoxy resin modified epoxy resin composition and a process for the preparation of the modified epoxy resin
Inventors:
Yoshikazu Kobayashi, Yojiro Yamamoto
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Jan 21, 1998
Inventors
Yoshikazu Kobayashi
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.