Granted Patent
Utility
US 5,580,764 · App. 08/392,796
Process for microbial reduction producing 4(S)-hydroxy-6(S)methyl-thienopyran derivatives
Inventors:
Robert Antony Holt, Stuart Richard Rigby
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Feb 28, 1995
Inventors
Robert Antony Holt
Stuart Richard Rigby
Assignee (at issue)
Zeneca Limited
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.