Inventor · disambiguated record
Hirofumi Ohtsuka
Also filed as: OHTSUKA HIROFUMI
18 granted patents·3 pending applications·260 citations·filing 1996–2022
94Inventor score
Files withOSAKA GAS CO LTD12MITSUBISHI ELECTRIC CORP4RENESAS TECH CORP2HONDA MOTOR CO LTD1OHTSUKA HIROFUMI1
Top patents by PatentIndex Score
21 records- 0182US6721627B2Track conveyance systemMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Apr 13, 2004·34 cites·6 claims
- 0282US6687568B2Transportation systemMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Feb 3, 2004·32 cites·3 claims
- 0376US6733243B2Method of interbay transportationRENESAS TECH CORP·Filed 2002·Granted May 11, 2004·24 cites·2 claims
- 0473US6577972B2Sampling inspection managing systemMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Jun 10, 2003·19 cites·5 claims
- 0568US7371706B2Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gasOSAKA GAS CO LTD·Filed 2004·Granted May 13, 2008·10 cites·4 claims
- 0668US6788990B1Process control device and process control methodRENESAS TECH CORP·Filed 2000·Granted Sep 7, 2004·16 cites·16 claims
- 0768US6602481B1Catalyst for removing hydrocarbons from exhaust gas and method for clarification of exhaust gasOSAKA GAS CO LTD·Filed 1999·Granted Aug 5, 2003·24 cites·3 claims
- 0866US7364712B2Catalyst for purifying methane-containing waste gas and method of purifying methane-containing waste gasOSAKA GAS CO LTD·Filed 2001·Granted Apr 29, 2008·12 cites·3 claims
- 0962US5993764ANitrogen oxide-reducing catalyst and process for reducing nitrogen oxides in exhaust gasOSAKA GAS CO LTD·Filed 1996·Granted Nov 30, 1999·27 cites·18 claims
- 1061US9067175B2Method and apparatus for removing low-concentration methaneOHTSUKA HIROFUMI·Filed 2010·Granted Jun 30, 2015·2 cites·19 claims
- 1161US6075438ACommunication network for vehicle control and diagnosis method thereofHONDA MOTOR CO LTD·Filed 1997·Granted Jun 13, 2000·35 cites·21 claims
- 1260US10814312B2Desulfurizing agent for gases and gas desulfurization methodOSAKA GAS CO LTD·Filed 2018·Granted Oct 27, 2020·0 cites·2 claims
- 1358US6535778B2Process control method and process control apparatusMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Mar 18, 2003·8 cites·8 claims
- 1457US12194442B2Gas desulfurizing agent and desulfurizing methodOSAKA GAS CO LTD·Filed 2020·Granted Jan 14, 2025·0 cites·2 claims
- 1556US6887446B2Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gasOSAKA GAS CO LTD·Filed 2003·Granted May 3, 2005·4 cites·4 claims
- 1651US5985225ANitrogen oxides reduction catalyst and process for reducing nitrogen oxides in exhaust gasOSAKA GAS CO LTD·Filed 1996·Granted Nov 16, 1999·13 cites·9 claims
- 1751US2024181435A1Carbon Dioxide Methanation Catalyst Molded Body and Method for Producing the SameOSAKA GAS CO LTD·Filed 2022·Application pending·0 cites
- 1849US2005002839A1Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gasOSAKA GAS CO LTD·Filed 2004·Application pending·0 cites
- 1947US8899968B2Combustible gas processing system and combustible gas processing methodSEKI KENJI·Filed 2008·Granted Dec 2, 2014·0 cites·5 claims
- 2047US2016008790A1Reforming Catalyst for Hydrocarbons and Method of its ManufactureOSAKA GAS CO LTD·Filed 2013·Application pending·0 cites
- 2146US12492154B2Method for producing fuel gasOSAKA GAS CO LTD·Filed 2021·Granted Dec 9, 2025·0 cites·7 claims
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