Granted Patent
Utility
US 6,488,596 · App. 09/436,217
Golf ball with hard thin cover
Inventors:
Kiyoto Maruoka, Naoki Kato
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Nov 9, 1999
Inventors
Kiyoto Maruoka
Naoki Kato
Assignee (at issue)
SUMITOMO RUBBER INDUSTRIES, LTD.
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.