Inventor
ARAI TOHRU
JP31 patents
⚠️ This page may combine multiple inventors who share the name “ARAI TOHRU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYODA CHUO KENKYUSHO KK
25 patentsUS5198285AMar 30, 1993
Hard and lubricant thin film of iron base metallic material coated with amorphous carbon-hydrogen-silicon
TOYODA CHUO KENKYUSHO KK53 citations96
US5443662AAug 22, 1995
Method of forming a nitride or carbonitride layer
TOYODA CHUO KENKYUSHO KK31 citations92
US4844949AJul 4, 1989
Method of surface treatment and apparatus used therefor
TOYODA CHUO KENKYUSHO KK39 citations92
US4597808AJul 1, 1986
Process for ion nitriding aluminum or aluminum alloys
TOYODA CHUO KENKYUSHO KK32 citations92
US4765847AAug 23, 1988
Method of treating the surface of iron alloy materials
TOYODA CHUO KENKYUSHO KK23 citations82
US4686117AAug 11, 1987
Method of forming a carbide layer
TOYODA CHUO KENKYUSHO KK22 citations82
US4436560AMar 13, 1984
Process for manufacturing boride dispersion copper alloys
TOYODA CHUO KENKYUSHO KK24 citations81
US4818351AApr 4, 1989
Method for the surface treatment of an iron or iron alloy article
TOYODA CHUO KENKYUSHO KK7 citations74
US4909862AMar 20, 1990
Process for ion nitriding aluminum material
TOYODA CHUO KENKYUSHO KK14 citations73
US4871401AOct 3, 1989
Fluidized bed method of forming a nitride or carbonitride layer
TOYODA CHUO KENKYUSHO KK9 citations73
US4794044ADec 27, 1988
Method for surface treatment
TOYODA CHUO KENKYUSHO KK10 citations73
US4786526ANov 22, 1988
Surface treating method and apparatus
TOYODA CHUO KENKYUSHO KK17 citations73
US4569862AFeb 11, 1986
Method of forming a nitride layer
TOYODA CHUO KENKYUSHO KK14 citations73
US4453987AJun 12, 1984
Method for producing edged tools
TOYODA CHUO KENKYUSHO KK17 citations73
US4400224AAug 23, 1983
Method for forming a carbide layer on the surface of a ferrous alloy article or a cemented carbide article
TOYODA CHUO KENKYUSHO KK8 citations73
US4158578AJun 19, 1979
Method for forming a carbide layer of a Va-Group element of the periodic table or chromium on the surface of a ferrous alloy article
TOYODA CHUO KENKYUSHO KK10 citations73
US4514275AApr 30, 1985
Apparatus for physical vapor deposition
TOYODA CHUO KENKYUSHO KK14 citations69
US4202705AMay 13, 1980
Treating bath, forming a mixed carbide layer of Va-Group elements on a ferrous alloy surface and resulting product
TOYODA CHUO KENKYUSHO KK11 citations68
US4804445AFeb 14, 1989
Method for the surface treatment of an iron or iron alloy article
TOYODA CHUO KENKYUSHO KK3 citations63
US4250208AFeb 10, 1981
Method for forming a two-layered carbide surface on a ferrous-alloy article and resulting product
TOYODA CHUO KENKYUSHO KK5 citations63
US4436559AMar 13, 1984
Process for manufacturing boride dispersion copper alloys
TOYODA CHUO KENKYUSHO KK3 citations62
US4009086AFeb 22, 1977
Method for a surface treatment of an iron, ferrous alloy or cemented carbide article
TOYODA CHUO KENKYUSHO KK3 citations62
US3959092AMay 25, 1976
Method for a surface treatment of cemented carbide article
TOYODA CHUO KENKYUSHO KK6 citations62
US3930575AJan 6, 1976
Method for a surface treatment of an iron, ferrous alloy or cemented carbide article
TOYODA CHUO KENKYUSHO KK2 citations62
US4778540AOct 18, 1988
Method for surface treatment and treating material therefor
TOYODA CHUO KENKYUSHO KK1 citations51
EISAI CO LTD
3 patentsUS6518423B1Feb 11, 2003
Benzopiperidine derivatives
EISAI CO LTD27 citations91
US7056696B1Jun 6, 2006
Expression vector containing a drug-resistance gene having a destabilizing sequence as selection marker
EISAI CO LTD6 citations72
US6743620B1Jun 1, 2004
Method for preparing retrovirus vector for gene therapy
EISAI CO LTD11 citations72