Inventor · disambiguated record
Tetsuzo Ishikawa
Also filed as: ISHIKAWA TETSUZO
6 granted patents·1 pending application·40 citations·filing 1999–2014
79Inventor score
Top patents by PatentIndex Score
7 records- 0180US9382949B2Shaft coupling structureSUMITOMO HEAVY INDUSTRIES·Filed 2013·Granted Jul 5, 2016·6 cites·5 claims
- 0272US6174223B1Method and apparatus for polishing external-tooth gearsSUMITOMO HEAVY INDUSTRIES·Filed 2000·Granted Jan 16, 2001·14 cites·7 claims
- 0366US9200677B2Shaft coupling structureSUMITOMO HEAVY INDUSTRIES·Filed 2013·Granted Dec 1, 2015·3 cites·14 claims
- 0459US8562473B2Speed reducer incorporating portion structure, incorporating method, and eccentric oscillating type speed reducerISHIKAWA TETSUZO·Filed 2012·Granted Oct 22, 2013·2 cites·13 claims
- 0552US6378206B1Method of fabricating pin retaining ring for internal gear, internal meshing planetary gear structure, and hydraulic motor pumpSUMITOMO HEAVY INDUSTRIES·Filed 1999·Granted Apr 30, 2002·15 cites·10 claims
- 0647US9331545B2Rotation apparatus including motor and speed reducerSUMITOMO HEAVY INDUSTRIES·Filed 2014·Granted May 3, 2016·0 cites·6 claims
- 0738US2008207377A1Oscillating internally meshing planetary gear system and method for manufacturing eccentric body shaftSUMITOMO HEAVY INDUSTRIES·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →