Granted Patent
Utility
US 5,380,793 · App. 08/091,488
Styrene soluble unsatured polyester resin from polyethylene terephthalate
Inventor:
Timothy P. Pepper
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Jul 13, 1993
Inventor
Timothy P. Pepper
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.