Granted Patent
Utility
US 5,908,893 · App. 08/848,639
Process for producing deproteinized natural rubber latex
Inventors:
Atsuko Kawasaki, Shinichi Nakade, Toshiaki Sakaki
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Apr 29, 1997
Inventors
Atsuko Kawasaki
Shinichi Nakade
Toshiaki Sakaki
Assignees (at issue)
SUMITOMO RUBBER INDUSTRIES, LTD.
Kao Corporation
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.