Inventor · disambiguated record
Yoshimasa Koizumi
Also filed as: KOIZUMI YOSHIMASA
11 granted patents·1,157 citations·filing 1994–1999
93Inventor score
Files withSUMITOMO RUBBER IND10
Top patents by PatentIndex Score
11 records- 0198US5482285AThree-piece solid golf ballSUMITOMO RUBBER IND·Filed 1994·Granted Jan 9, 1996·476 cites·6 claims
- 0297US5490674AThree-piece solid golf ballSUMITOMO RUBBER IND·Filed 1994·Granted Feb 13, 1996·260 cites·3 claims
- 0393US5574107ASolid golf ballSUMITOMO RUBBER IND·Filed 1995·Granted Nov 12, 1996·65 cites·4 claims
- 0492US5711723AThree-piece solid golf ballSUMITOMO RUBBER IND·Filed 1996·Granted Jan 27, 1998·120 cites·3 claims
- 0588US5589546ASolid golf ballSUMITOMO RUBBER IND·Filed 1995·Granted Dec 31, 1996·52 cites·4 claims
- 0686US5601502AThree-piece solid golf ballSUMITOMO RUBBER IND·Filed 1994·Granted Feb 11, 1997·69 cites·12 claims
- 0784US5935022AThree-piece solid golf ballSUMITOMO RUBBER IND·Filed 1997·Granted Aug 10, 1999·78 cites·6 claims
- 0864US5780169AGolf ballSUMITOMO RUBBER IND·Filed 1996·Granted Jul 14, 1998·31 cites·10 claims
- 0931US6525124B1Golf ballFiled 1996·Granted Feb 25, 2003·4 cites·10 claims
- 1030USRE38589EThree-piece solid golf ballSUMITOMO RUBBER IND·Filed 1999·Granted Sep 14, 2004·1 cites·14 claims
- 1129US5518815AThread rubber for thread wound golf ballSUMITOMO RUBBER IND·Filed 1994·Granted May 21, 1996·1 cites·15 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →