Inventor · disambiguated record
Akira Doi
Also filed as: DOI AKIRA
40 granted patents·8 pending applications·1,037 citations·filing 1981–2024
98Inventor score
Files withHITACHI LTD9SUMITOMO ELECTRIC INDUSTRIES7NISSIN ELECTRIC CO LTD6MITSUBISHI ELECTRIC CORP4HITACHI HIGH TECH CORP3
Top patents by PatentIndex Score
48 records- 0197US6388382B1Plasma processing apparatus and methodHITACHI LTD·Filed 2000·Granted May 14, 2002·78 cites·40 claims
- 0294US6833051B2Plasma processing apparatus and methodHITACHI LTD·Filed 2002·Granted Dec 21, 2004·33 cites·13 claims
- 0393US6893720B1Object coated with carbon film and method of manufacturing the sameNISSIN ELECTRIC CO LTD·Filed 2000·Granted May 17, 2005·47 cites·4 claims
- 0493US6564744B2Plasma CVD method and apparatusNISSIN ELECTRIC CO LTD·Filed 2001·Granted May 20, 2003·52 cites·11 claims
- 0592US6756737B2Plasma processing apparatus and methodHITACHI LTD·Filed 2002·Granted Jun 29, 2004·37 cites·4 claims
- 0692US6180019B1Plasma processing apparatus and methodHITACHI LTD·Filed 1997·Granted Jan 30, 2001·51 cites·2 claims
- 0791US6499424B2Plasma processing apparatus and methodHITACHI LTD·Filed 2001·Granted Dec 31, 2002·23 cites·12 claims
- 0890US6136386AMethod of coating polymer or glass objects with carbon filmsNISSIN ELECTRIC CO LTD·Filed 1997·Granted Oct 24, 2000·89 cites·31 claims
- 0990US4634600ASurface treatment processSUMITOMO ELECTRIC INDUSTRIES·Filed 1985·Granted Jan 6, 1987·63 cites·10 claims
- 1088US6465057B1Plasma CVD method and apparatusNISSIN ELECTRIC CO LTD·Filed 1996·Granted Oct 15, 2002·48 cites·12 claims
- 1188US5938527AAir ventilation or air supply systemMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 17, 1999·101 cites·23 claims
- 1287US5653106AExothermic heat generating apparatusMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Aug 5, 1997·68 cites·18 claims
- 1384US6032730AHeat exchanger and method of manufacturing a heat exchanging member of a heat exchangerMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Mar 7, 2000·52 cites·15 claims
- 1483US4501717ASintering method using a plasma gas atmosphereSUMITOMO ELECTRIC INDUSTRIES·Filed 1983·Granted Feb 26, 1985·36 cites·14 claims
- 1582US6846363B2Plasma processing apparatus and methodHITACHI LTD·Filed 2002·Granted Jan 25, 2005·11 cites·6 claims
- 1681US6481370B2Plasma processsing apparatusHITACHI LTD·Filed 2000·Granted Nov 19, 2002·10 cites·9 claims
- 1774US4425369ACheese-containing composition for dessert making and process for producing the sameFUJI OIL CO LTD·Filed 1981·Granted Jan 10, 1984·45 cites·7 claims
- 1871US4474849ACoated hard alloysSUMITOMO ELECTRIC INDUSTRIES·Filed 1982·Granted Oct 2, 1984·21 cites·9 claims
- 1968US2024353033A1Girth welded joint of steel pipeNIPPON STEEL CORP·Filed 2022·Application pending·0 cites
- 2065US2025299902A1Sample inspection systemHITACHI HIGH TECH CORP·Filed 2024·Application pending·0 cites
- 2163US6506662B2Method for forming an SOI substrate by use of a plasma ion irradiationFiled 2000·Granted Jan 14, 2003·14 cites·15 claims
- 2261US5565070ASolvent vapor sucking method and solvent recovering apparatusMORIKAWA IND CORP·Filed 1994·Granted Oct 15, 1996·24 cites·10 claims
- 2360US4383957AMethod of sintering a ceramic compositionSUMITOMO ELECTRIC INDUSTRIES·Filed 1981·Granted May 17, 1983·15 cites·5 claims
- 2460US2012168136A1Total heat exchange elementTAKADA MASARU·Filed 2009·Application pending·0 cites
- 2559US9030061B2Galvanoscanner and laser processing machineVIA MECHANICS LTD·Filed 2014·Granted May 12, 2015·0 cites·3 claims
- 2659US9030060B2Galvanoscanner and laser processing machineVIA MECHANICS LTD·Filed 2014·Granted May 12, 2015·0 cites·3 claims
- 2759US7629714B2Rocking actuator and laser machining apparatusHITACHI VIA MECHANICS LTD·Filed 2007·Granted Dec 8, 2009·2 cites·4 claims
- 2859US7612479B2Scanner for equalizing torque constant and reducing torque constant variationHITACHI VIA MECHANICS LTD·Filed 2006·Granted Nov 3, 2009·2 cites·5 claims
- 2959US2012043064A1Total heat exchange elementTAKADA MASARU·Filed 2009·Application pending·0 cites
- 3059US2012037349A1Heat exchange elementTAKADA MASARU·Filed 2009·Application pending·0 cites
- 3156US7673668B2Spherical casting sandKAO CORP·Filed 2003·Granted Mar 9, 2010·3 cites·12 claims
- 3256US4882238ADie for use in forming lensSUMITOMO ELECTRIC INDUSTRIES·Filed 1988·Granted Nov 21, 1989·15 cites·1 claims
- 3355US12174360B2Imaging mechanism and sample analyzing apparatus provided with the sameHITACHI HIGH TECH CORP·Filed 2019·Granted Dec 24, 2024·0 cites·6 claims
- 3453US8780429B2Galvanoscanner and laser processing machineYAMAMOTO AKIHIRO·Filed 2011·Granted Jul 15, 2014·0 cites·21 claims
- 3553US5023101AShortening for hard butter product and process for producing hard butter productFUJI OIL CO LTD·Filed 1988·Granted Jun 11, 1991·21 cites·3 claims
- 3652US6076598AOpposed flow heat exchangerMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Jun 20, 2000·17 cites·4 claims
- 3752US5302324AMethod for decontaminating substances contaminated with radioactivity, and method for decontaminating the materials used for said decontaminationMORIKAWA SANGYO·Filed 1991·Granted Apr 12, 1994·12 cites·14 claims
- 3850US5503591AApparatus for decontaminating substances contaminated with radioactivityMORIKAWA SANGYO·Filed 1994·Granted Apr 2, 1996·13 cites·11 claims
- 3947US2007284571A1Organic thin-film transistor, method of manufacturing same and equipment for manufacturing sameDOI AKIRA·Filed 2007·Application pending·0 cites
- 4046US7635860B2Manufacturing method of organic thin-film transistors and equipment for manufacturing the sameHITACHI LTD·Filed 2007·Granted Dec 22, 2009·0 cites·6 claims
- 4145US11342211B2Wafer inspection apparatus and wafer inspection methodHITACHI HIGH TECH CORP·Filed 2018·Granted May 24, 2022·0 cites·10 claims
- 4245US5356661AHeat transfer insulated parts and manufacturing method thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Oct 18, 1994·15 cites·13 claims
- 4345US2002084035A1Plasma processing apparatus and methodFiled 2002·Application pending·0 cites
- 4443US2019331910A1Light Deflector and Light Deflector Control DeviceHITACHI LTD·Filed 2018·Application pending·0 cites
- 4542US4485080AProcess for the production of diamond powderSUMITOMO ELECTRIC INDUSTRIES·Filed 1983·Granted Nov 27, 1984·5 cites·11 claims
- 4639US5843293AArc-type evaporatorNISSIN ELECTRIC CO LTD·Filed 1996·Granted Dec 1, 1998·6 cites·8 claims
- 4738US6023025AElectric wire and manufacturing method thereofNISSIN ELECTRIC CO LTD·Filed 1997·Granted Feb 8, 2000·5 cites·12 claims
- 4829US5126077ARadioactive decontamination method using methylene chlorideMORIKAWA SANGYO·Filed 1991·Granted Jun 30, 1992·3 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →