Granted Patent
Utility
US 4,648,978 · App. 06/726,422
Process for the continuous preparation of sterile, depyrogenated solutions
Inventors:
Ralph W. Makinen, James R. Rickloff
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Apr 24, 1985
Inventors
Ralph W. Makinen
James R. Rickloff
Assignee (at issue)
American Sterilizer 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.