Granted Patent
Utility
US 4,228,069 · App. 06/022,743
Azoxy compound having use in a process for preparing foamed structures
Inventor:
Ronald E. MacLeay
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Mar 22, 1979
Inventor
Ronald E. MacLeay
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.