Granted Patent
Utility
US 5,229,158 · App. 07/616,511
Polyhydroxyalkanoate cream substitutes
Inventor:
Manssur Yalpani
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Nov 21, 1990
Inventor
Manssur Yalpani
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.