Granted Patent
Utility
US 4,259,464 · App. 05/686,096
Cyclic phenol-aldehyde resins
Inventors:
Rudolf S. Buriks, Allen R. Fauke, John H. Munch
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: May 13, 1976
Inventors
Rudolf S. Buriks
Allen R. Fauke
John H. Munch
Assignee (at issue)
Petrolite 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.