Granted Patent
Utility
US 4,315,087 · App. 05/571,927
Quaternary polyaminoamides
Inventors:
Derek Redmore, Benjamin T. Outlaw
Patented Case
View Patent ↗
Granted: Feb 9, 1982
Filed: Apr 28, 1975
Inventors
Derek Redmore
Benjamin T. Outlaw
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.