Granted Patent
Utility
US 4,299,770 · App. 06/154,377
Recovery of substituted pyrrole acetate
Inventor:
Muthunadar P. Periasamy
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: May 29, 1980
Inventor
Muthunadar P. Periasamy
Assignee (at issue)
MALLINCKRODT LLC
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.