Granted Patent
Utility
US 4,316,775 · App. 06/204,506
Treatment of waste stream from adipic acid production
Inventor:
William D. Nash
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Nov 6, 1980
Inventor
William D. Nash
Assignee (at issue)
El Paso Products Company
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.