Inventor · disambiguated record
Tatsuo Hirai
Also filed as: HIRAI TATSUO
9 granted patents·200 citations·filing 2005–2014
88Inventor score
Top patents by PatentIndex Score
9 records- 0196US7275450B2Tightening torque measuring unit and torque indicating tightening deviceMAEDA METAL IND·Filed 2005·Granted Oct 2, 2007·56 cites·13 claims
- 0294US8264374B2Wireless data transmitting and receiving systemOBATAKE TAKAYOSHI·Filed 2010·Granted Sep 11, 2012·108 cites·16 claims
- 0391US7757587B2Bolt or nut tightening deviceMAEDA METAL IND·Filed 2007·Granted Jul 20, 2010·17 cites·2 claims
- 0479US7886635B2Bolt or nut tightening deviceMAEDA METAL IND·Filed 2010·Granted Feb 15, 2011·6 cites·8 claims
- 0567US9776453B2Tightening device and tightening methodTONE CO LTD·Filed 2014·Granted Oct 3, 2017·3 cites·8 claims
- 0659US9645026B2Tightening deviceTONE CO LTD·Filed 2014·Granted May 9, 2017·2 cites·3 claims
- 0759US7992455B2Tightening torque measuring unitMAEDA METAL IND·Filed 2009·Granted Aug 9, 2011·2 cites·5 claims
- 0844USD551998STorque measuring deviceMAEDA METAL IND·Filed 2005·Granted Oct 2, 2007·6 cites·1 claims
- 0929USD605539SPower increasing device with a display for wrenchMAEDA METAL IND·Filed 2008·Granted Dec 8, 2009·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →