Inventor

SUMIYA HITOSHI

JP72 patents

⚠️ This page may combine multiple inventors who share the name “SUMIYA HITOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUMIYA HITOSHI

SUMITOMO ELECTRIC INDUSTRIES

Process for the production of synthetic diamond

Diamond sintered compact and a process for the production of the same

Process for the synthesis of diamond

Low defect density diamond single crystal and a process for the production of the same

Boron nitride system including an hBN starting material with a catalyst and a sintered cNB body having a high heat conductivity based on the catalyst

Cutting tool of a cubic boron nitride sintered compact

Diamond sintered body and a process for the production of the same, tools and abrasive grains using the same

Process for production of diamond abrasive grains

Method for bonding a cubic boron nitride sintered compact

Infrared optical part and measuring instrument

Cubic boron nitride sintered body and method of preparing the same

Cubic boron nitride sintered compact and method of preparing the compact

Method of manufacturing sintered compact of cubic boron nitride

Diamond polycrystalline body and method for manufacturing the same, and tool

Polycrystalline diamond body, cutting tool, wear-resistant tool, grinding tool, and method for producing polycrystalline diamond body

Method of synthesizing cubic system boron nitride

Diamond single crystal, method for producing the same, and single crystal diamond tool

Diamond composite body, substrate, diamond, tool including diamond, and method for manufacturing diamond

Diamond polycrystal, tool including diamond polycrystal, and method of producing diamond polycrystal

Diamond polycrystal and tool including same

Diamond polycrystal and tool including same

Method of manufacturing diamond, diamond, diamond composite substrate, diamond joined substrate, and tool

Diamond composite body, substrate, diamond, tool including diamond, and method for manufacturing diamond

Coated sinter of cubic-system boron nitride

Polycrystalline diamond and method for manufacturing same, scribe tool, scribe wheel, dresser, rotating tool, wire drawing die, cutting tool, electrode, and processing method using polycrystalline diamond

Method of producing boron nitride polycrystal, boron nitride polycrystal, cutting tool, wear-resisting tool, and grinding tool

Polycrystalline diamond and method for manufacturing same, scribe tool, scribe wheel, dresser, rotating tool, orifice for water jet, wire drawing die, cutting tool, electrode, and processing method using polycrystalline diamond

Method for producing polycrystalline diamond body, polycrystalline diamond body, cutting tool, wear-resistance tool and grinding tool

Diamond polycrystal and method of producing the same

Indenter made of polycrystalline diamond, and method and apparatus using the same for evaluating crack initiation load

Diamond tool, synthetic single crystal diamond and method of synthesizing single crystal diamond, and diamond jewelry

Synthetic single crystal diamond, tool including the same and method of producing synthetic single crystal diamond

Synthetic single crystal diamond

Single-crystal diamond, method of manufacturing the same, and method of manufacturing single-crystal diamond plate

Wear-resistant tool

Single-crystal diamond material, single-crystal diamond chip, and perforated tool

Single-crystal diamond, method for manufacturing single-crystal diamond, and chemical vapor deposition device used in same

Single-crystal diamond, method of producing same, tool including single-crystal diamond, and component including single-crystal diamond

Method of manufacturing diamond, diamond, diamond composite substrate, diamond joined substrate, and tool

Composite sintered body

Composite polycrystal

Composite polycrystal

Single crystal diamond, method for manufacturing single crystal diamond, and tool containing single crystal diamond

Single-crystal diamond material, single-crystal diamond chip, and perforated tool

SUMIYA HITOSHI

High-hardness conductive diamond polycrystalline body and method of producing the same

High-hardness conductive diamond polycrystalline body and method of producing the same

Wire drawing die

ISHIDA YUH

Cubic boron nitride complex polycrystal and manufacturing method therefor, and cutting tool, wire-drawing die and grinding tool

SUMITOMO ELECTRIC HARDMETAL CORP

Diamond die

AISIN SEIKI

Clip-clinching device for a coil-spring unit of a mattress