Granted Patent
Utility
US 5,135,934 · App. 07/548,825
3-phenyl-5,6-dihydrobenz(c) acridine-7-carboxylic acids and related compounds as immunosuppressive agents
Inventors:
Carl Henry Behrens, Bruce D. Jafee
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Jul 6, 1990
Inventors
Carl Henry Behrens
Bruce D. Jafee
Assignee (at issue)
The DuPont Merck Pharmaceutical 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.