Granted Patent
Utility
US 4,212,973 · App. 06/062,649
Preparation of cyclopentane-1,1-diacetic acid and intermediate
Inventor:
Raymond D. Clark
Patented Case
View Patent ↗
Granted: Jul 15, 1980
Filed: Aug 1, 1979
Inventor
Raymond D. Clark
Assignee (at issue)
EASTMAN KODAK 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.