Inventor · disambiguated record
Tatsuo Matsumura
Also filed as: MATSUMURA TATSUO
7 granted patents·3 pending applications·78 citations·filing 1998–2018
84Inventor score
Files withHITACHI AUTOMOTIVE SYSTEMS LTD4HITACHI LTD3KNORR BREMSE COMMERCIAL VEHICLE SYSTEMS JAPAN LTD1TOYOTA MOTOR CO LTD1UNISIA JECS CORP1
Top patents by PatentIndex Score
10 records- 0196US11945522B2Vehicle-mounted apparatusKNORR BREMSE COMMERCIAL VEHICLE SYSTEMS JAPAN LTD·Filed 2018·Granted Apr 2, 2024·36 cites·8 claims
- 0274US11691666B2Power steering apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2017·Granted Jul 4, 2023·3 cites·16 claims
- 0374US10370028B2Power steering deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2016·Granted Aug 6, 2019·3 cites·25 claims
- 0467US10988167B2Power steering apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2017·Granted Apr 27, 2021·2 cites·17 claims
- 0566US7791295B2Field weakening control apparatus for permanent magnet motor and electric power steering using sameHITACHI LTD·Filed 2008·Granted Sep 7, 2010·6 cites·30 claims
- 0665US7648003B2Power steering systemHITACHI LTD·Filed 2007·Granted Jan 19, 2010·6 cites·15 claims
- 0762US5937805AApparatus and method for controlling valve timing of engineUNISIA JECS CORP·Filed 1998·Granted Aug 17, 1999·22 cites·12 claims
- 0844US2009125190A1Power Steering ApparatusTOYOTA MOTOR CO LTD·Filed 2008·Application pending·0 cites
- 0944US2009125189A1Power Steering ApparatusHITACHI LTD·Filed 2008·Application pending·0 cites
- 1036US2010250067A1Vehicular steering control apparatus and methodHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2010·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →