Granted Patent
Utility
US 5,834,563 · App. 08/852,164
Composite rubber particles and graft copolymer particles of composite rubber
Inventors:
Katsuhiko Kimura, Taizo Aoyama
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: May 6, 1997
Inventors
Katsuhiko Kimura
Taizo Aoyama
Assignee (at issue)
KANEKA 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.