Granted Patent
Utility
US 5,899,339 · App. 08/915,307
Process for recovering polyhydroxyalkanoates using centrifugal fractionation
Inventor:
Isao Noda
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Aug 19, 1997
Inventor
Isao Noda
Assignee (at issue)
The Procter & Gamble Company
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.