Inventor · disambiguated record
Kiyoshi Hirakawa
Also filed as: HIRAKAWA KIYOSHI
29 granted patents·2 pending applications·491 citations·filing 1984–2022
97Inventor score
Top patents by PatentIndex Score
31 records- 0189US6455156B2Hollow fibers and manufacturing method of hollow fibersKURARAY CO·Filed 2001·Granted Sep 24, 2002·36 cites·12 claims
- 0286US5047448AAntimicrobial-shaped article and a process for producing the sameKURARAY CO·Filed 1989·Granted Sep 10, 1991·53 cites·9 claims
- 0380US5304420AVinyl alcohol unit-containing polymer fibers having high moisture absorption and high water absorptionKURARAY CO·Filed 1992·Granted Apr 19, 1994·36 cites·7 claims
- 0479US5567796APolyester fiberKURARAY CO·Filed 1994·Granted Oct 22, 1996·29 cites·5 claims
- 0579US5059482AComposite fiber and process for producing the sameKURARAY CO·Filed 1989·Granted Oct 22, 1991·37 cites·2 claims
- 0674US6635204B2Process of making hollow fibers and treating fibersKURARAY CO·Filed 2002·Granted Oct 21, 2003·10 cites·9 claims
- 0773US6562151B2Rolling shaft made by high-frequency quenchingNSK LTD·Filed 2001·Granted May 13, 2003·12 cites·15 claims
- 0873US6012851ARolling bearingNSK LTD·Filed 1998·Granted Jan 11, 2000·29 cites·11 claims
- 0973US5766758AFiber of ethylene-vinyl alcohol copolymer and process for production thereofKURARAY CO·Filed 1997·Granted Jun 16, 1998·36 cites·7 claims
- 1073US5464695AComposite fiber containing inorganic fine powderKURARAY CO·Filed 1995·Granted Nov 7, 1995·29 cites·6 claims
- 1171US5860749ARolling bearing for supporting rotating spindlesNSK LTD·Filed 1995·Granted Jan 19, 1999·25 cites·12 claims
- 1269US9709970B2Control device, security management system, and security management methodYASKAWA ELECTRIC CORP·Filed 2014·Granted Jul 18, 2017·4 cites·18 claims
- 1364US5077003ARolling-part steel and rolling part employing sameNIPPON SEIKO KK·Filed 1989·Granted Dec 31, 1991·20 cites·51 claims
- 1462US11892398B2Sensor for determining liquid typesTOYOKO KAGAKU KK·Filed 2021·Granted Feb 6, 2024·0 cites·20 claims
- 1558US2024344997A1Optical detection chip and optical detection systemTHE UNIV OF KITAKYUSHU·Filed 2022·Application pending·0 cites
- 1656US6093268ACorrective tempering method for rolling elementsNSK LTD·Filed 1995·Granted Jul 25, 2000·9 cites·6 claims
- 1756US5439300ARolling bearingNSK LTD·Filed 1994·Granted Aug 8, 1995·19 cites·8 claims
- 1855US5340650AVinyl alcohol units-containing polymer composite fiber having resistance to hot water and wet heat and process for its productionKURARAY CO·Filed 1993·Granted Aug 23, 1994·17 cites·9 claims
- 1952US5087519AEthylene-vinyl alcohol copolymer composite fiber and production thereofKURARAY CO·Filed 1989·Granted Feb 11, 1992·13 cites·3 claims
- 2051US5639168ABall bearing for supporting a spindle rotating at high speedNSK LTD·Filed 1996·Granted Jun 17, 1997·18 cites·16 claims
- 2150US11173600B2Operation device, control system, control method, and non-transitory computer-readable storage mediumYASKAWA ELECTRIC CORP·Filed 2019·Granted Nov 16, 2021·0 cites·20 claims
- 2250US6248287B1Corrective tempering apparatus for rolling elementsNSK LTD·Filed 1999·Granted Jun 19, 2001·7 cites·6 claims
- 2348US4514459AWoven fabric having a velvety appearanceKURARAY CO·Filed 1984·Granted Apr 30, 1985·10 cites·8 claims
- 2447US5695375ADisperse dye-dyeable regenerated cellulose fiber and textile products containing the fiberKURARAY CO·Filed 1996·Granted Dec 9, 1997·8 cites·3 claims
- 2543US11426868B2Operation device, control system, control method, and non-transitory computer-readable storage mediumYASKAWA ELECTRIC CORP·Filed 2019·Granted Aug 30, 2022·0 cites·20 claims
- 2643US5753367ADisperse dye-dyeable regenerated cellulose fiber and textile products containing the fiberKURARAY CO·Filed 1995·Granted May 19, 1998·7 cites·17 claims
- 2742US2007163322A1Automatic machine control deviceYASKAWA DENKI SEISAKUSHO KK·Filed 2005·Application pending·0 cites
- 2838US5603576AMethod for manufacturing balls for bearing and products therebyNSK LTD·Filed 1994·Granted Feb 18, 1997·6 cites·2 claims
- 2936US5447579ARolling part steelNSK LTD·Filed 1993·Granted Sep 5, 1995·5 cites·6 claims
- 3036US5359672ALine detecting method using two rectangular windows passing through the line to be detectedYASKAWA DENKI SEISAKUSHO KK·Filed 1991·Granted Oct 25, 1994·10 cites·2 claims
- 3135US6119347AMethod for manufacturing balls for bearing and products therebyNSK LTD·Filed 1996·Granted Sep 19, 2000·6 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →