Granted Patent
Utility
US 4,521,335 · App. 06/611,070
Aglycone and pseudo-aglycones of the AAD 216 antibiotics
Inventors:
George Wai-Kin Chan, Robert D. Sitrin
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: May 17, 1984
Inventors
George Wai-Kin Chan
Robert D. Sitrin
Assignee (at issue)
SmithKline Beckman 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.