Granted Patent
Utility
US 5,502,222 · App. 08/252,302
Process for preparing delta 9,11 and 21-chloro corticosteroids
Inventors:
Xiaoyong Fu, Tiruvettipuram K. Thiruvengadam, Chou-Hong Tann, Junning Lee, Cesar Colon
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Jun 1, 1994
Inventors
Xiaoyong Fu
Tiruvettipuram K. Thiruvengadam
Chou-Hong Tann
Junning Lee
Cesar Colon
Assignee (at issue)
SCHERING 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.