Granted Patent
Utility
US 4,839,446 · App. 07/229,289
Thermosetting bis oxazoline-polyphenol based resins for resin transfer molding which contain a monooxazine or monooxazoline diluent
Inventors:
Billy M. Culbertson, Omar Tiba
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Aug 8, 1988
Inventors
Billy M. Culbertson
Omar Tiba
Assignee (at issue)
Ashland Oil, Inc.
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.