Inventor · disambiguated record
Yoshio Yokoyama
Also filed as: YOKOYAMA YOSHIO
23 granted patents·4 pending applications·371 citations·filing 1976–2019
96Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES9MAKITA ELECTRIC WORKS LTD4DENSO CORP3NIPPON DENSO CO3MAKITA CORP2
Top patents by PatentIndex Score
27 records- 0187US5118023ATwo-stage returning mechanismMAKITA ELECTRIC WORKS LTD·Filed 1991·Granted Jun 2, 1992·59 cites·7 claims
- 0285USD306657SPower driven brush for cleaning carpets, floors or the likeMAKITA ELECTRIC WORKS LTD·Filed 1987·Granted Mar 20, 1990·23 cites·1 claims
- 0384US6360046B1Dispersion-shifted optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Mar 19, 2002·29 cites·14 claims
- 0477US11062458B2Appearance inspection device, transformation data generation device, and programDENSO CORP·Filed 2019·Granted Jul 13, 2021·4 cites·6 claims
- 0577US6748769B2Method of producing glass particles depositSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted Jun 15, 2004·9 cites·18 claims
- 0673US5004140AElectrically-operated tackerMAKITA ELECTRIC WORKS LTD·Filed 1990·Granted Apr 2, 1991·35 cites·16 claims
- 0767US5806191AHedge trimmerMAKITA CORP·Filed 1997·Granted Sep 15, 1998·24 cites·3 claims
- 0864US4035399AProcess for the preparation of 1,4-naphthoquinoneNIPPON JORYU KOGYO KK·Filed 1976·Granted Jul 12, 1977·10 cites·13 claims
- 0963US6407404B1Apparatus for the examining defect of monolithic substrate and method for examining the sameDENSO CORP·Filed 2000·Granted Jun 18, 2002·5 cites·16 claims
- 1063USD320727SPortable electric grinderMAKITA ELECTRIC WORKS LTD·Filed 1989·Granted Oct 15, 1991·9 cites·1 claims
- 1162US5440650AImage processing system for inspection of overprinted matterNIPPON DENSO CO·Filed 1994·Granted Aug 8, 1995·33 cites·5 claims
- 1260US6535679B2Optical fiber and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Mar 18, 2003·23 cites·18 claims
- 1359US5653030AHedge trimmerMAKITA CORP·Filed 1995·Granted Aug 5, 1997·18 cites·10 claims
- 1455US6275638B1Dispersion-shifted fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Aug 14, 2001·18 cites·4 claims
- 1553US6697559B2Optical fiber and method of making the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Feb 24, 2004·3 cites·8 claims
- 1650US6519403B1Optical fiber and method of making the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Feb 11, 2003·12 cites·8 claims
- 1747US2009190824A1Inspection apparatus and inspection methodDENSO CORP·Filed 2009·Application pending·0 cites
- 1845US6889529B2Method of manufacturing optical fiber preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted May 10, 2005·0 cites·30 claims
- 1944US5872871AMethod and device for measuring the position of a patternNIPPON DENSO CO·Filed 1996·Granted Feb 16, 1999·16 cites·4 claims
- 2044US5783959AHigh precision clock signal generatorADVANTEST CORP·Filed 1996·Granted Jul 21, 1998·11 cites·7 claims
- 2144US2002139150A1Method and apparatus for elongating optical fiber preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Application pending·0 cites
- 2242US5296942AMethod and apparatus for inspecting lightness on the surface of an objectNIPPON DENSO CO·Filed 1992·Granted Mar 22, 1994·12 cites·6 claims
- 2342US2003003228A1Method and device for manufactuirng glass particulate sedimented bodyFiled 2001·Application pending·0 cites
- 2439US6474108B2Fiber preform method with a hot drill-in step for a Ge-doped tube and an F-doped rodSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Nov 5, 2002·7 cites·2 claims
- 2538US2003174320A1Piercing inspection apparatusYOKOYAMA YOSHIO·Filed 2003·Application pending·0 cites
- 2637US5901833AGolf ball conveyorFiled 1997·Granted May 11, 1999·10 cites·8 claims
- 2714US4981982ACondensation catalyst and catalytical condensation process for organic carboxylic anhydridesYOKOYAMA YOSHIO·Filed 1990·Granted Jan 1, 1991·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →