Granted Patent
Utility
US 5,763,531 · App. 08/840,583
Preparation of unsaturated polyester resins
Inventor:
Robert Howard Boutier, Jr.
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Apr 22, 1997
Inventor
Robert Howard Boutier, Jr.
Assignee (at issue)
Elf Atochem North America, 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.