Inventor · disambiguated record
Katsushi Hamakubo
Also filed as: HAMAKUBO KATSUSHI
30 granted patents·27 pending applications·184 citations·filing 2007–2024
94Inventor score
Top patents by PatentIndex Score
57 records- 0197US8178480B2Lubricant for magnetic disk, process for producing the same, and magnetic diskHAMAKUBO KATSUSHI·Filed 2007·Granted May 15, 2012·80 cites·8 claims
- 0294US8492011B2Lubricant compound for a magnetic disk, magnetic disk, and method of manufacturing the sameITOH KAE·Filed 2010·Granted Jul 23, 2013·74 cites·9 claims
- 0391US11629269B2Resin composition, secondary coating material for optical fiber, and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Apr 18, 2023·2 cites·9 claims
- 0491US8999534B2Lubricant for magnetic disk and magnetic diskSHIMOKAWA KOICHI·Filed 2010·Granted Apr 7, 2015·6 cites·3 claims
- 0588US11919804B2Resin composition, secondary coating material for optical fiber, optical fiber, and method for manufacturing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Mar 5, 2024·2 cites·12 claims
- 0685US12025829B2Resin composition, optical fiber and method for producing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Jul 2, 2024·2 cites·7 claims
- 0785US11603331B2Optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Mar 14, 2023·2 cites·6 claims
- 0884US9177586B2Magnetic disk and manufacturing method thereofSHIMOKAWA KOICHI·Filed 2009·Granted Nov 3, 2015·5 cites·9 claims
- 0983US8697262B2Lubricant for magnetic disc, magnetic disc and method of producing the sameHAMAKUBO KATSUSHI·Filed 2011·Granted Apr 15, 2014·3 cites·8 claims
- 1078US11914186B2Optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Feb 27, 2024·2 cites·7 claims
- 1172US9558778B2Lubricant compound for magnetic disk and magnetic diskSUZUKI KOTA·Filed 2010·Granted Jan 31, 2017·2 cites·7 claims
- 1269US11573367B2Resin composition and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Feb 7, 2023·0 cites·13 claims
- 1366US11814493B2Coating composition, eyeglass lens, and method for manufacturing eyeglassHOYA LENS THAILAND LTD·Filed 2019·Granted Nov 14, 2023·0 cites·6 claims
- 1466US9984715B2Magnetic disk and manufacturing method thereofWD MEDIA LLC·Filed 2015·Granted May 29, 2018·0 cites·11 claims
- 1566US8920872B2Method of producing a magnetic recording discITOH KAE·Filed 2011·Granted Dec 30, 2014·2 cites·6 claims
- 1666US2024343642A1Resin composition for colored coating on optical fiber, optical fiber, and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2024·Application pending·0 cites
- 1765US9873799B2Coating compositionHOYA CORP·Filed 2014·Granted Jan 23, 2018·1 cites·8 claims
- 1863US2025059085A1Resin composition for optical fiber coating, colored coating material for optical fiber, optical fiber, and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2024·Application pending·0 cites
- 1963US2024052173A1Resin composition, optical fiber, and method for producing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 2062US9245568B2Magnetic disk and method of manufacturing the sameITOH KAE·Filed 2009·Granted Jan 26, 2016·1 cites·6 claims
- 2162US2025216596A1Resin composition for optical fiber coating, colored coating material for optical fiber, optical fiber, and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2023·Application pending·0 cites
- 2262US2024026116A1Resin composition, secondary coating material for optical fiber, optical fiber, and method for manufacturing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 2361US2023312778A1Resin composition, optical fiber secondary coating material, optical fiber, and optical fiber production methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 2460US11820704B2Resin composition, secondary coating material for optical fiber, optical fiber, and method for producing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Nov 21, 2023·0 cites·6 claims
- 2558US12054629B2Resin composition, optical fiber, and method for manufacturing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Aug 6, 2024·0 cites·7 claims
- 2658US11579358B2Optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Feb 14, 2023·0 cites·6 claims
- 2758US2022041501A1Resin composition, secondary coating material for optical fiber, optical fiber, and method for producing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Application pending·0 cites
- 2857US11947161B2Resin composition, optical fiber secondary coating material, optical fiber and manufacturing method of optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Apr 2, 2024·0 cites·17 claims
- 2956US11415769B2Intermittent connection-type optical fiber tape core wire, optical fiber cable, and method for manufacturing intermittent connection-type optical fiber tape core wireSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Aug 16, 2022·0 cites·9 claims
- 3056US2024409773A1Resin composition for optical fiber coating, colored coating material for optical fiber, and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
- 3156US2022066095A1Resin composition, secondary coating material of optical fiber, optical fiber, and method for producing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Application pending·0 cites
- 3255US11960115B2Optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Apr 16, 2024·0 cites·13 claims
- 3355US11472735B2Optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Oct 18, 2022·0 cites·16 claims
- 3455US9005782B2Magnetic disk and method of manufacturing the sameHAMAKUBO KATSUSHI·Filed 2009·Granted Apr 14, 2015·0 cites·11 claims
- 3554US2024392155A1Resin composition for optical fiber coating, colored coating material for optical fiber, and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
- 3653US9783683B2Coating compositionHOYA CORP·Filed 2014·Granted Oct 10, 2017·0 cites·10 claims
- 3753US2024288629A1Optical fiber and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2024·Application pending·0 cites
- 3853US2024288630A1Optical fiber and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2024·Application pending·0 cites
- 3952US10072155B2Coating compositionHOYA CORP·Filed 2014·Granted Sep 11, 2018·0 cites·5 claims
- 4052US9322968B2Polarizing lensHOYA CORP·Filed 2013·Granted Apr 26, 2016·0 cites·3 claims
- 4152US2025258353A1Resin composition for colored coating on optical fiber, optical fiber, and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2023·Application pending·0 cites
- 4251US9500774B2Plastic lens and production method thereforHAMAKUBO KATSUSHI·Filed 2014·Granted Nov 22, 2016·0 cites·5 claims
- 4350US2018268853A1Magnetic disk and manufacturing method thereofWD MEDIA LLC·Filed 2018·Application pending·0 cites
- 4450US2025237808A1Resin composition for optical fiber coating, colored coating material for optical fiber, optical fiber, and optical fiber ribbonSUMITOMO ELECTRIC INDUSTRIES·Filed 2023·Application pending·0 cites
- 4549US2021230337A1Resin composition for covering optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Application pending·0 cites
- 4648US2019112498A1Coating composition, eyeglass lens, and method for manufacturing eyeglass lensHOYA LENS THAILAND LTD·Filed 2018·Application pending·0 cites
- 4746US2021009854A1Resin composition and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 4846US2020262749A1Resin composition and optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 4946US2021053870A1Resin composition, optical fiber and method for manufacturing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 5046US2021024772A1Resin composition, optical fiber and method for manufacturing optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →