Granted Patent
Utility
US 5,225,555 · App. 07/932,193
Processes for purification of 2,4-di(1-pyrrolidinyl)-6-chloropyrimidine
Inventors:
Bruce Allen Pearlman, Amphlett Greg Padilla
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Aug 19, 1992
Inventors
Bruce Allen Pearlman
Amphlett Greg Padilla
Assignee (at issue)
The Upjohn Co.
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.