Granted Patent
Utility
US 4,115,352 · App. 05/799,862
Heat stabilizer composition for halogenated resins
Inventors:
Joseph M. Bohen, Sameeh S. Toukan
Patented Case
View Patent ↗
Granted: Sep 19, 1978
Filed: May 23, 1977
Inventors
Joseph M. Bohen
Sameeh S. Toukan
Assignee (at issue)
Pennwalt 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.