Granted Patent
Utility
US 6,575,850 · App. 09/652,043
Golf ball
Inventors:
Satoshi Iwami, Hidenori Hiraoka, Akira Kato, Masatoshi Yokota
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Aug 31, 2000
Inventors
Satoshi Iwami
Hidenori Hiraoka
Akira Kato
Masatoshi Yokota
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.