Granted Patent
Utility
US 4,319,042 · App. 06/196,807
Process for producing methacrylic acid
Inventor:
Sargis Khoobiar
Patented Case
View Patent ↗
Granted: Mar 9, 1982
Filed: Oct 14, 1980
Inventor
Sargis Khoobiar
Assignee (at issue)
Atlantic Richfield 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.