Granted Patent
Utility
US 4,639,480 · App. 06/736,004
Polyester compositions containing a phthalimide
Inventors:
Gail H. Birum, Thomas C. Mathis, Richard D. Stolk
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: May 17, 1985
Inventors
Gail H. Birum
Thomas C. Mathis
Richard D. Stolk
Assignee (at issue)
Monsanto 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.