Granted Patent
Utility
US 4,240,930 · App. 06/027,632
Catalyst and process for producing methacrylic acid
Inventor:
Sargis Khoobiar
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Apr 6, 1979
Inventor
Sargis Khoobiar
Assignee (at issue)
Halcon Research and Development Corp.
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.