Granted Patent
Utility
US 6,258,574 · App. 09/359,319
Production of optically active 2-substituted tetrahydropyran-4-ones
Inventors:
Robert Antony Holt, Stuart Richard Rigby, David Waterson
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Jul 23, 1999
Inventors
Robert Antony Holt
Stuart Richard Rigby
David Waterson
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.