Inventor · disambiguated record
Toshio Ohi
Also filed as: OHI TOSHIO
40 granted patents·5 pending applications·264 citations·filing 1983–2015
97Inventor score
Top patents by PatentIndex Score
45 records- 0191US6274782B1Method for purifying hexafluoroethaneSHOWA DENKO KK·Filed 2000·Granted Aug 14, 2001·26 cites·9 claims
- 0289US5675046AProcess for producing perfluorocarbonSHOWA DENKO KK·Filed 1996·Granted Oct 7, 1997·40 cites·14 claims
- 0386US7064240B2Process for producing perfluorocarbons and use thereofSHOWA DENKO KK·Filed 2002·Granted Jun 20, 2006·30 cites·16 claims
- 0484US7084316B2Process for purifying pentafluoroethane, process for producing the same, and use thereofSHOWA DENKO KK·Filed 2003·Granted Aug 1, 2006·13 cites·12 claims
- 0583US7799959B2Process for producing 1,2,3,4-tetrachlorohexafluorobutaneSHOWA DENKO KK·Filed 2007·Granted Sep 21, 2010·4 cites·14 claims
- 0679US5444171AMethod for purification of 1,1,1,2-tetrafluoroethaneSHOWA DENKO KK·Filed 1992·Granted Aug 22, 1995·19 cites·6 claims
- 0776US5710351AProcess for producing hexafluoroethaneSHOWA DENKO KK·Filed 1996·Granted Jan 20, 1998·15 cites·10 claims
- 0872US6162957ACatalytic decomposition of perfluoro-compoundSHOWA DENKO KK·Filed 2000·Granted Dec 19, 2000·19 cites·14 claims
- 0972US6004377ASystem for collecting and refining SF6 gas and method thereforHITACHI ENG SERVICE·Filed 1998·Granted Dec 21, 1999·26 cites·7 claims
- 1071US6720464B2Production and use of octafluoropropaneSHOWA DENKO KK·Filed 2001·Granted Apr 13, 2004·4 cites·16 claims
- 1170US8030528B2Process for producing 1,2,3,4-tetrachlorohexafluorobutaneSHOWA DENKO KK·Filed 2008·Granted Oct 4, 2011·1 cites·6 claims
- 1270US7812202B2Process for producing hexafluoro-1,3-butadieneSHOWA DENKO KK·Filed 2007·Granted Oct 12, 2010·1 cites·19 claims
- 1364US7138553B2Method for purifying tetrachloroethylene and process for producing hydrofluorocarbonsSHOWA DENKO KK·Filed 2002·Granted Nov 21, 2006·3 cites·36 claims
- 1462US6489523B1Process for producing hexafluoroethane and use thereofSHOWA DENKO KK·Filed 2001·Granted Dec 3, 2002·3 cites·19 claims
- 1561US6967260B2Method for purification of tetrafluoromethane and use thereofSHOWA DENKO KK·Filed 2001·Granted Nov 22, 2005·2 cites·14 claims
- 1661US5892134AMethod for producing perfluorocarbonSHOWA DENKO KK·Filed 1997·Granted Apr 6, 1999·7 cites·5 claims
- 1760US7074974B2Process for the production of fluoroethane and use of the sameSHOWA DENKO KK·Filed 2004·Granted Jul 11, 2006·2 cites·27 claims
- 1860US6023007ACatalytic decomposition of perfluoro-compoundSHOWA DENKO KK·Filed 1998·Granted Feb 8, 2000·21 cites·11 claims
- 1958US7045668B2Production and use of hexafluoroethaneSHOWA DENKO KK·Filed 2002·Granted May 16, 2006·1 cites·12 claims
- 2057US9233987B2Method for producing monosilane and tetraalkoxysilaneSHOWA DENKO KK·Filed 2015·Granted Jan 12, 2016·0 cites·7 claims
- 2156US5276223AProcess for producing 1,1,1,2-tetrafluoroethaneSHOWA DENKO KK·Filed 1993·Granted Jan 4, 1994·7 cites·3 claims
- 2255US8293955B2Production process for 1,2,3,4-tetrachlorohexafluorobutane and refining processOHNO HIROMOTO·Filed 2008·Granted Oct 23, 2012·0 cites·11 claims
- 2355US8258352B2Production process for chlorine-containing fluorine-containing compoundOHNO HIROMOTO·Filed 2008·Granted Sep 4, 2012·0 cites·8 claims
- 2454US7018598B2Process for producing nitrogen trifluorideSHOWA DENKO KK·Filed 2001·Granted Mar 28, 2006·1 cites·8 claims
- 2553US8664438B2Process for producing carbonyl difluorideOHNO HIROMOTO·Filed 2009·Granted Mar 4, 2014·0 cites·14 claims
- 2653US8415516B2Production process and purification process for 1,2,3,4-tetrachlorohexafluorobutaneOHNO HIROMOTO·Filed 2009·Granted Apr 9, 2013·0 cites·8 claims
- 2753US7208644B2Production and use of hexafluoroethaneSHOWA DENKO KK·Filed 2005·Granted Apr 24, 2007·0 cites·16 claims
- 2852US7820127B2Method and apparatus for producing nitrogen trifluorideSHOWA DENKO KK·Filed 2006·Granted Oct 26, 2010·0 cites·24 claims
- 2952US7179653B2Measuring method for concentration of halogen and fluorine compound, measuring equipment thereof and manufacturing method of halogen compoundSHOWA DENKO KK·Filed 2001·Granted Feb 20, 2007·1 cites·10 claims
- 3051US9045503B2Method for producing monosilane and tetraalkoxysilaneOHNO HIROMOTO·Filed 2010·Granted Jun 2, 2015·0 cites·2 claims
- 3151US8829221B2Method for producing monosilane and tetraalkoxysilaneOHNO HIROMOTO·Filed 2009·Granted Sep 9, 2014·0 cites·9 claims
- 3251US7102039B2Production and use of octafluoropropaneSHOWA DENKO KK·Filed 2004·Granted Sep 5, 2006·0 cites·6 claims
- 3350US8404906B2Process for producing 1,2,3,4-tetrachlorohexafluorobutaneOHNO HIROMOTO·Filed 2009·Granted Mar 26, 2013·0 cites·8 claims
- 3448US2016060193A1Dichloromethane purification method and process for producing difluoromethane using the sameSHOWA DENKO KK·Filed 2014·Application pending·0 cites
- 3547US8692038B2Fluorine-containing compound purification methodOHNO HIROMOTO·Filed 2010·Granted Apr 8, 2014·0 cites·6 claims
- 3644US7176337B2Process for producing perfluorocarbons and use thereofSHOWA DENKO KK·Filed 2004·Granted Feb 13, 2007·0 cites·9 claims
- 3743US6752975B2Combustion exhaust gas treatment process and treatment apparatusSHOWA DENKO KK·Filed 2001·Granted Jun 22, 2004·2 cites·7 claims
- 3843US4513570AManual reset type bimetal thermostatNIPPON GT CORP·Filed 1983·Granted Apr 30, 1985·6 cites·5 claims
- 3942US2007191652A1Process for production of 1,1,1,2- tetrafluoroethane and/or pentafluorethane and applications of the sameOHNO HIROMOTO·Filed 2005·Application pending·0 cites
- 4041US5345015AProcess for producing 1,1,2-tetrafluoroethaneSHOWA DENKO KK·Filed 1993·Granted Sep 6, 1994·2 cites·4 claims
- 4138US2004231695A1Cleaning gas for semiconductor production equipment and cleaning method using the gasFiled 2002·Application pending·0 cites
- 4236US2003056388A1Cleaning gas for semiconductor production equipmentFiled 2001·Application pending·0 cites
- 4335US2004242943A1Process for the production of fluoroethane and use of the produced fluoroethaneFiled 2003·Application pending·0 cites
- 4433US5714648AProcess for producing tetrafluoromethaneSHOWA DENKO KK·Filed 1996·Granted Feb 3, 1998·2 cites·12 claims
- 4533US4681170ARock drills for drilling continuously arrayed boresFURUKAWA CO LTD·Filed 1985·Granted Jul 21, 1987·6 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Toshio Ohi 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 →