Inventor · disambiguated record
Hirofumi Ota
Also filed as: OTA HIROFUMI
36 granted patents·7 pending applications·677 citations·filing 1982–2025
97Inventor score
Top patents by PatentIndex Score
43 records- 0198US7101305B2Planetary-gear-type multiple-step transmission for vehicleTOYOTA MOTOR CO LTD·Filed 2004·Granted Sep 5, 2006·313 cites·45 claims
- 0296US7972237B2Gear train unit with motor generatorTOYOTA MOTOR CO LTD·Filed 2008·Granted Jul 5, 2011·59 cites·17 claims
- 0395US11970006B2Liquid containerCANON KK·Filed 2022·Granted Apr 30, 2024·2 cites·13 claims
- 0494US7402119B2Multi-speed transmission for vehicleTOYOTA MOTOR CO LTD·Filed 2005·Granted Jul 22, 2008·27 cites·32 claims
- 0594US7118509B2Multiple-step transmissionTOYOTA MOTOR CO LTD·Filed 2004·Granted Oct 10, 2006·52 cites·21 claims
- 0689US7384361B2Planetary gear type multistage transmission for vehicleTOYOTA MOTOR CO LTD·Filed 2007·Granted Jun 10, 2008·13 cites·5 claims
- 0789US7232022B2Clutch-purpose hydraulic servoTOYOTA MOTOR CO LTD·Filed 2006·Granted Jun 19, 2007·12 cites·14 claims
- 0888US7488269B2Automatic transmissionTOYOTA MOTOR CO LTD·Filed 2007·Granted Feb 10, 2009·13 cites·32 claims
- 0986US7419452B2Control apparatus of vehicular automatic transmissionTOYOTA MOTOR CO LTD·Filed 2006·Granted Sep 2, 2008·14 cites·8 claims
- 1086US7276011B2Automatic transmissionTOYOTA MOTOR CO LTD·Filed 2004·Granted Oct 2, 2007·24 cites·28 claims
- 1184US7604558B2Automatic transmission with lubricating structureAISIN AW CO·Filed 2006·Granted Oct 20, 2009·10 cites·11 claims
- 1282US9702381B2Hydraulic control systemTOYOTA MOTOR CO LTD·Filed 2014·Granted Jul 11, 2017·5 cites·16 claims
- 1382US7559867B2Connection structure for automatic transmissionAISIN AW CO·Filed 2006·Granted Jul 14, 2009·7 cites·14 claims
- 1482US7267630B2Multistage transmissionTOYOTA MOTOR CO LTD·Filed 2004·Granted Sep 11, 2007·19 cites·8 claims
- 1582US7076355B2Shift control apparatus for vehicle step-variable automatic transmissionTOYOTA MOTOR CO LTD·Filed 2004·Granted Jul 11, 2006·21 cites·12 claims
- 1677US7337051B2Shift control apparatus for step-variable automatic transmissionTOYOTA MOTOR CO LTD·Filed 2004·Granted Feb 26, 2008·19 cites·13 claims
- 1774US7186203B2Planetary gear type multistage transmission for vehicleTOYOTA MOTOR CO LTD·Filed 2004·Granted Mar 6, 2007·12 cites·11 claims
- 1873US7393299B2Hydraulic control apparatus and hydraulic control method for automatic transmissionTOYOTA MOTOR CO LTD·Filed 2006·Granted Jul 1, 2008·6 cites·8 claims
- 1971US7682276B2Hydraulic control system for use in a motor vehicle and method for controlling the hydraulic control systemTOYOTA MOTOR CO LTD·Filed 2007·Granted Mar 23, 2010·5 cites·12 claims
- 2070US7462130B2Control apparatus and control method of an automatic transmissionTOYOTA MOTOR CO LTD·Filed 2006·Granted Dec 9, 2008·5 cites·9 claims
- 2168US7748504B2Hydraulic servo for a brake in an automatic transmissionAISIN AW CO·Filed 2006·Granted Jul 6, 2010·5 cites·2 claims
- 2268US7517297B2Multistage transmissionTOYOTA MOTOR CO LTD·Filed 2007·Granted Apr 14, 2009·4 cites·9 claims
- 2367US7648013B2Oil pressure supply in an automatic transmissionAISIN AW CO·Filed 2006·Granted Jan 19, 2010·4 cites·3 claims
- 2464US7172527B2Planetary-gear-type multiple-step transmission for vehicleTOYOTA MOTOR CO LTD·Filed 2004·Granted Feb 6, 2007·10 cites·14 claims
- 2560US12315394B2Cheating estimation device, cheating estimation method, and recording mediumOMRON TATEISI ELECTRONICS CO·Filed 2024·Granted May 27, 2025·0 cites·7 claims
- 2656US7524267B2Control apparatus for vehicular automatic transmissionTOYOTA MOTOR CO LTD·Filed 2006·Granted Apr 28, 2009·2 cites·7 claims
- 2756US2025029512A1Learning support device, learning support method, and recording mediumOMRON TATEISI ELECTRONICS CO·Filed 2024·Application pending·0 cites
- 2852US8583335B2Control device for vehicular drive apparatusOTA HIROFUMI·Filed 2009·Granted Nov 12, 2013·2 cites·13 claims
- 2950US8677741B2Vehicle driving apparatusOTA HIROFUMI·Filed 2009·Granted Mar 25, 2014·1 cites·19 claims
- 3050US2008207387A1Planetary gear type multistage transmission for vehicleTOYOTA MOTOR CO LTD·Filed 2008·Application pending·0 cites
- 3148US8066608B2Automatic transmissionSUGIURA NOBUTADA·Filed 2006·Granted Nov 29, 2011·2 cites·14 claims
- 3248US7585243B2Automatic transmissionAISIN AW CO·Filed 2006·Granted Sep 8, 2009·0 cites·6 claims
- 3347US9132651B2Seal member for sealing supply port of ink tank and ink tank unit including seal memberCANON KK·Filed 2013·Granted Sep 15, 2015·0 cites·7 claims
- 3447US2022379621A1Liquid container and introduction memberCANON KK·Filed 2022·Application pending·0 cites
- 3546US2011005216A1Variable displacement torque converterTOYOTA MOTOR CO LTD·Filed 2009·Application pending·0 cites
- 3645US4470131ABubble memory device and method of manufacturing the sameHITACHI LTD·Filed 1982·Granted Sep 4, 1984·9 cites·2 claims
- 3745US2025285549A1Learning assistance device, learning assistance method, and learning assistance programOMRON TATEISI ELECTRONICS CO·Filed 2025·Application pending·0 cites
- 3845US2006280392A1Bushing and rotation support device using the sameTOYOTA MOTOR CO LTD·Filed 2006·Application pending·0 cites
- 3943US10508728B2Resin side cover for transmission caseTOYOTA MOTOR CO LTD·Filed 2017·Granted Dec 17, 2019·0 cites·10 claims
- 4041US7377373B2Hydraulic control apparatus for hydraulic power transmission with lock-up clutchTOYOTA MOTOR CO LTD·Filed 2006·Granted May 27, 2008·0 cites·4 claims
- 4136US8205655B2Vibration welding apparatusOTA HIROFUMI·Filed 2011·Granted Jun 26, 2012·0 cites·4 claims
- 4236US2015224804A1Surface treatment method for imageCANON KK·Filed 2015·Application pending·0 cites
- 4334US10563738B2Vehicular automatic transmissionTOYOTA MOTOR CO LTD·Filed 2016·Granted Feb 18, 2020·0 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Hirofumi Ota files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →