Granted Patent
Utility
US 4,226,757 · App. 06/058,156
Polypivalolactone polymer blends
Inventors:
Jesse D. Jones, Edwin D. Hornbaker
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: Jul 17, 1979
Inventors
Jesse D. Jones
Edwin D. Hornbaker
Assignee (at issue)
Ethyl Corporation
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.