Inventor · disambiguated record
Masakazu Sakamoto
Also filed as: SAKAMOTO MASAKAZU
79 granted patents·5 pending applications·815 citations·filing 1976–2024
99Inventor score
Top patents by PatentIndex Score
84 records- 0197USD321338SStorage battery for electric toolsRYOBI LTD·Filed 1989·Granted Nov 5, 1991·61 cites·1 claims
- 0297USD255417SPortable electric grinderRYOBI LTD·Filed 1977·Granted Jun 17, 1980·45 cites·1 claims
- 0396USD301967SPower concrete hammerRYOBI LTD·Filed 1986·Granted Jul 4, 1989·48 cites·1 claims
- 0495USD280797SPortable electric drillRYOBI LTD·Filed 1983·Granted Oct 1, 1985·45 cites·1 claims
- 0592USD404274SPortable electric jigsawRYOBI LTD·Filed 1998·Granted Jan 19, 1999·54 cites·1 claims
- 0692USD332208SPortable electric driver drillRYOBI LTD·Filed 1990·Granted Jan 5, 1993·39 cites·1 claims
- 0791USD342878SPortable electric hammer drillRYOBI LTD·Filed 1991·Granted Jan 4, 1994·38 cites·1 claims
- 0889US12035481B2Circuit board, light emitting device, and manufacturing method thereofNICHIA CORP·Filed 2022·Granted Jul 9, 2024·1 cites·22 claims
- 0989USD280883SPortable electric drillRYOBI LTD·Filed 1983·Granted Oct 8, 1985·27 cites·1 claims
- 1084USD343554SElectric trimmerRYOBI LTD·Filed 1992·Granted Jan 25, 1994·24 cites·1 claims
- 1183US10477692B2Printed board, light source device, semiconductor device, and methods of manufacturing sameNICHIA CORP·Filed 2018·Granted Nov 12, 2019·3 cites·20 claims
- 1283USD325503SPortable electric driverRYOBI LTD·Filed 1989·Granted Apr 21, 1992·20 cites·1 claims
- 1382US11439019B2Printed circuit board and method of manufacturing the sameNICHIA CORP·Filed 2019·Granted Sep 6, 2022·2 cites·12 claims
- 1482USD323099SPortable electric belt sanderRYOBI LTD·Filed 1989·Granted Jan 14, 1992·19 cites·1 claims
- 1581USD321337SBattery chargerRYOBI LTD·Filed 1989·Granted Nov 5, 1991·18 cites·1 claims
- 1680US10957836B2Printed board and light emitting deviceNICHIA CORP·Filed 2020·Granted Mar 23, 2021·1 cites·18 claims
- 1780USD260804SFishing reelRYOBI LTD·Filed 1979·Granted Sep 15, 1981·13 cites·1 claims
- 1879USD265497SFishing reelRYOBI LTD·Filed 1980·Granted Jul 20, 1982·15 cites·1 claims
- 1978USD339510SPortable electric sawRYOBI LTD·Filed 1991·Granted Sep 21, 1993·18 cites·1 claims
- 2078USD326598SPortable electric drillRYOBI LTD·Filed 1989·Granted Jun 2, 1992·19 cites·1 claims
- 2178USD325861SPortable electric driverRYOBI LTD·Filed 1989·Granted May 5, 1992·16 cites·1 claims
- 2276USD295945SPortable electric jig sawRYOBI LTD·Filed 1986·Granted May 31, 1988·15 cites·1 claims
- 2376USD261297SFishing reelRYOBI LTD·Filed 1979·Granted Oct 13, 1981·11 cites·1 claims
- 2475USD342425SElectric mowerRYOBI LTD·Filed 1992·Granted Dec 21, 1993·16 cites·1 claims
- 2575USD341533SPortable electric hammer drillRYOBI LTD·Filed 1992·Granted Nov 23, 1993·17 cites·1 claims
- 2675USD337038SPortable electric driverRYOBI LTD·Filed 1991·Granted Jul 6, 1993·17 cites·1 claims
- 2774US12063743B2Printed circuit boardNICHIA CORP·Filed 2022·Granted Aug 13, 2024·0 cites·15 claims
- 2874USD333953SPortable electric trimmerRYOBI LTD·Filed 1991·Granted Mar 16, 1993·16 cites·1 claims
- 2974USD327669SBattery chargerRYOBI LTD·Filed 1990·Granted Jul 7, 1992·16 cites·1 claims
- 3073USD341532SConcrete hammerRYOBI LTD·Filed 1992·Granted Nov 23, 1993·15 cites·1 claims
- 3173USD307377SGrass shearRYOBI LTD·Filed 1988·Granted Apr 24, 1990·13 cites·1 claims
- 3272US11807047B2Wear amount estimation method, wear amount estimation device, and wear amount estimation programBRIDGESTONE CORP·Filed 2019·Granted Nov 7, 2023·0 cites·7 claims
- 3371US2025087964A1Manufacturing method of mounting substrate, mounting substrate, and light-emitting moduleNICHIA CORP·Filed 2024·Application pending·0 cites
- 3471US2022241901A1Manufacturing method of processed resin substrate and laser processing apparatusLASER SYSTEMS INC·Filed 2022·Application pending·0 cites
- 3569USD345171SBand sawRYOBI LTD·Filed 1992·Granted Mar 15, 1994·13 cites·1 claims
- 3669USD280846SFishing reelRYOBI LTD·Filed 1983·Granted Oct 1, 1985·10 cites·1 claims
- 3767USD265914SPrinting machineRYOBI LTD·Filed 1980·Granted Aug 24, 1982·9 cites·1 claims
- 3866USD269031SFishing reelRYOBI LTD·Filed 1980·Granted May 17, 1983·9 cites·1 claims
- 3966USD263242SPrinting machineRYOBI LTD·Filed 1980·Granted Mar 2, 1982·9 cites·1 claims
- 4064USD325858SPortable electric driverRYOBI LTD·Filed 1989·Granted May 5, 1992·9 cites·1 claims
- 4163US8443140B2Apparatus, computer-readable recording medium and storage systemTAKEUCHI TOSHIAKI·Filed 2010·Granted May 14, 2013·2 cites·16 claims
- 4263USD323098SPortable electric planeRYOBI LTD·Filed 1989·Granted Jan 14, 1992·9 cites·1 claims
- 4363USD277694SFishing reelRYOBI LTD·Filed 1984·Granted Feb 19, 1985·6 cites·1 claims
- 4461USD257445SFishing reelRYOBI LTD·Filed 1979·Granted Oct 21, 1980·6 cites·1 claims
- 4560USD334756SCompound miter sawRYOBI LTD·Filed 1991·Granted Apr 13, 1993·9 cites·1 claims
- 4659USD277767SPrinting machineRYOBI LTD·Filed 1982·Granted Feb 26, 1985·7 cites·1 claims
- 4758US11827060B2Heavy load tireBRIDGESTONE CORP·Filed 2019·Granted Nov 28, 2023·0 cites·3 claims
- 4857US12309934B2Circuit board with convex shaped post, light emitting device, and manufacturing method thereforNICHIA CORP·Filed 2022·Granted May 20, 2025·0 cites·21 claims
- 4957US8713219B2Switching device, switch control method, and storage systemTAKEUCHI TOSHIAKI·Filed 2011·Granted Apr 29, 2014·1 cites·5 claims
- 5057USD269030SFishing reelRYOBI LTD·Filed 1980·Granted May 17, 1983·6 cites·1 claims
Showing the top 50 of 84 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →