Granted Patent
Utility
US 4,238,490 · App. 06/011,416
Antihypertensive pyridazin(2H)-3-ones
Inventors:
Larry J. Powers, Zaven S. Ariyan, Russell Buchman, James A. Scozzie, Robert E. Moser, William J. Pyne
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Feb 12, 1979
Inventors
Larry J. Powers
Zaven S. Ariyan
Russell Buchman
James A. Scozzie
Robert E. Moser
William J. Pyne
Assignee (at issue)
Diamond Shamrock Corporation
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.