Inventor · disambiguated record
Hitoshi Sumiya
Also filed as: SUMIYA HITOSHI
71 granted patents·20 pending applications·567 citations·filing 1986–2025
98Inventor score
Top patents by PatentIndex Score
91 records- 0191US6129900AProcess for the synthesis of diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Oct 10, 2000·104 cites·12 claims
- 0289US9192899B2High-hardness conductive diamond polycrystalline body and method of producing the sameSUMIYA HITOSHI·Filed 2012·Granted Nov 24, 2015·6 cites·7 claims
- 0388US6030595AProcess for the production of synthetic diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Feb 29, 2000·89 cites·1 claims
- 0485US5769176ADiamond sintered compact and a process for the production of the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jun 23, 1998·65 cites·48 claims
- 0584US9487447B2Diamond polycrystalline body and method for manufacturing the same, and toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Nov 8, 2016·4 cites·15 claims
- 0682US11613826B2Synthetic single crystal diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Mar 28, 2023·1 cites·3 claims
- 0782US9663371B2Polycrystalline diamond body, cutting tool, wear-resistant tool, grinding tool, and method for producing polycrystalline diamond bodySUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted May 30, 2017·2 cites·6 claims
- 0880US5912217ADiamond sintered body and a process for the production of the same, tools and abrasive grains using the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Jun 15, 1999·38 cites·36 claims
- 0979US11041791B2Indenter made of polycrystalline diamond, and method and apparatus using the same for evaluating crack initiation loadSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Jun 22, 2021·1 cites·8 claims
- 1079US9416304B2Cubic boron nitride complex polycrystal and manufacturing method therefor, and cutting tool, wire-drawing die and grinding toolISHIDA YUH·Filed 2012·Granted Aug 16, 2016·5 cites·11 claims
- 1178US5194070AProcess for production of diamond abrasive grainsSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Mar 16, 1993·38 cites·6 claims
- 1278US2025223720A1Diamond composite body, substrate, diamond, tool including diamond, and method for manufacturing diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 2025·Application pending·0 cites
- 1377US12286726B2Diamond composite body, substrate, diamond, tool including diamond, and method for manufacturing diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Granted Apr 29, 2025·0 cites·1 claims
- 1476US6737377B1Cutting tool of a cubic boron nitride sintered compactSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted May 18, 2004·31 cites·6 claims
- 1576US4859531AMethod for bonding a cubic boron nitride sintered compactSUMITOMO ELECTRIC INDUSTRIES·Filed 1988·Granted Aug 22, 1989·32 cites·15 claims
- 1673US9487446B2Diamond polycrystalline body and method for manufacturing the same, and toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Nov 8, 2016·1 cites·13 claims
- 1772US10829379B2Polycrystalline diamond and manufacturing method thereof, scribe tool, scribing wheel, dresser, rotating tool, orifice for water jet, wiredrawing die, cutting tool, and electron emission sourceSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Nov 10, 2020·0 cites·5 claims
- 1872US9441312B2Diamond single crystal, method for producing the same, and single crystal diamond toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Sep 13, 2016·2 cites·13 claims
- 1971US11371139B2Method of manufacturing diamond, diamond, diamond composite substrate, diamond joined substrate, and toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Jun 28, 2022·0 cites·5 claims
- 2071US8784767B2Polycrystalline diamond and method of manufacturing the sameSUMIYA HITOSHI·Filed 2011·Granted Jul 22, 2014·1 cites·14 claims
- 2170US5908503ALow defect density diamond single crystal and a process for the production of the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Jun 1, 1999·32 cites·25 claims
- 2268US10287708B2Single-crystal diamond material, single-crystal diamond chip, and perforated toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted May 14, 2019·0 cites·16 claims
- 2367US10774442B2Single-crystal diamond material, single-crystal diamond chip, and perforated toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Sep 15, 2020·0 cites·7 claims
- 2467US8226922B2High-hardness conductive diamond polycrystalline body and method of producing the sameSUMIYA HITOSHI·Filed 2004·Granted Jul 24, 2012·7 cites·10 claims
- 2565US12258677B2Synthetic single crystal diamond, tool including the same and method of producing synthetic single crystal diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Mar 25, 2025·0 cites·9 claims
- 2665US9061336B2Wire drawing dieSUMIYA HITOSHI·Filed 2008·Granted Jun 23, 2015·2 cites·12 claims
- 2763US9963801B2Single crystal diamond and diamond toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted May 8, 2018·0 cites·14 claims
- 2863US9878914B2Polycrystalline diamond and manufacturing method thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Jan 30, 2018·0 cites·12 claims
- 2963US2016264422A1Polycrystalline diamond and manufacturing method thereof, scribe tool, scribing wheel, dresser, rotating tool, orifice for water jet, wiredrawing die, cutting tool, and electron emission sourceSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Application pending·0 cites
- 3062US9725826B2Single-crystal diamond and manufacturing method thereofIKEDA KAZUHIRO·Filed 2012·Granted Aug 8, 2017·0 cites·8 claims
- 3162US2025035524A1Contactor and evaluation method of minute abrasion characteristic of monocrystalline diamond using the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
- 3261US12391552B2Polycrystalline cubic crystal boron nitride and toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Aug 19, 2025·0 cites·11 claims
- 3361US10584428B2Method of manufacturing diamond, diamond, diamond composite substrate, diamond joined substrate, and toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Mar 10, 2020·0 cites·3 claims
- 3461US7404399B2Diamond tool, synthetic single crystal diamond and method of synthesizing single crystal diamond, and diamond jewelrySUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Jul 29, 2008·5 cites·27 claims
- 3561US2025003848A1Contactor and evaluation method of minute abrasion characteristics of monocrystalline diamond using the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
- 3660US10280531B2Diamond single crystal and production method thereof, and single crystal diamond toolSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted May 7, 2019·0 cites·2 claims
- 3760US9630853B2Method of preparing polycrystalline diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Apr 25, 2017·0 cites·5 claims
- 3859US11814293B2Diamond polycrystal, tool including diamond polycrystal, and method of producing diamond polycrystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Nov 14, 2023·0 cites·5 claims
- 3959US5332629ABoron nitride system including an hBN starting material with a catalyst and a sintered cNB body having a high heat conductivity based on the catalystSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Jul 26, 1994·28 cites·8 claims
- 4058US11427930B2Diamond polycrystal and tool including sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Aug 30, 2022·0 cites·5 claims
- 4158US11421341B2Diamond polycrystal and tool including sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Aug 23, 2022·0 cites·5 claims
- 4257US10399149B2Composite polycrystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Sep 3, 2019·0 cites·8 claims
- 4357US10118861B2Composite polycrystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Nov 6, 2018·0 cites·8 claims
- 4457US2010146865A1Polycrystalline diamondSUMITOMO ELECTRIC INDUSTRIES·Filed 2009·Application pending·0 cites
- 4557US2023383436A1Synthetic single crystal diamond and method for producing sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2021·Application pending·0 cites
- 4656US10703636B2Composite polycrystal and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Jul 7, 2020·0 cites·5 claims
- 4756US9850135B2Polycrystalline diamond and manufacturing method thereofIKEDA KAZUHIRO·Filed 2012·Granted Dec 26, 2017·0 cites·9 claims
- 4856US9403215B2Cutting tool and method for producing sameTATSUMI NATSUO·Filed 2012·Granted Aug 2, 2016·1 cites·14 claims
- 4956US2024279843A1Synthetic single crystal diamond and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
- 5056US2024287706A1Synthetic single crystal diamond and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2022·Application pending·0 cites
Showing the top 50 of 91 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →