Granted Patent
Utility
US 6,681,612 · App. 10/004,931
Method of manufacturing a curved metal plate, and golf club head
Inventors:
Satoshi Matsumoto, Nozomu Ariyasu, Chon-Chen Lin
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Dec 7, 2001
Inventors
Satoshi Matsumoto
Nozomu Ariyasu
Chon-Chen Lin
Assignees (at issue)
SUMITOMO METAL INDUSTRIES, LTD.
O-TA PRECISION INDUSTRY CO., 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.