Granted Patent
Utility
US 5,691,174 · App. 08/530,332
Production of plastics materials from microorganisms
Inventors:
John Macdonald Liddell, Timothy John Locke
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Oct 10, 1995
Inventors
John Macdonald Liddell
Timothy John Locke
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.