Granted Patent
Utility
US 4,256,642 · App. 06/051,499
Pharmaceutically active 2,9-dioxatricyclo[4,3,1,0.sup.3,7 ] decanes
Inventors:
Peter W. Thies, Akiji Asai
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Jun 25, 1979
Inventors
Peter W. Thies
Akiji Asai
Assignee (at issue)
Kali-Chemie Pharma GmbH
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.