Granted Patent
Utility
US 5,115,019 · App. 07/503,343
Carboxy-functional hydrogenated block copolymer dispersed in epoxy resin
Inventors:
Edward John Marx, Michael J. Watkins
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Mar 30, 1990
Inventors
Edward John Marx
Michael J. Watkins
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.