Inventor
DOI YOSHIHIKO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “DOI YOSHIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
10 patentsUS4401719AAug 30, 1983
Highly hard material coated articles
SUMITOMO ELECTRIC INDUSTRIES124 citations97
US4507189AMar 26, 1985
Process of physical vapor deposition
SUMITOMO ELECTRIC INDUSTRIES40 citations92
US4402994ASep 6, 1983
Highly hard material coated articles
SUMITOMO ELECTRIC INDUSTRIES29 citations92
US4169913AOct 2, 1979
Coated tool steel and machining tool formed therefrom
SUMITOMO ELECTRIC INDUSTRIES41 citations92
US4137106AJan 30, 1979
Super hard metal roll assembly and production thereof
SUMITOMO ELECTRIC INDUSTRIES30 citations79
US4401297AAug 30, 1983
Sintering furnace for powder metallurgy
SUMITOMO ELECTRIC INDUSTRIES22 citations78
US5262366ANov 16, 1993
Formation of a ceramic composite by centrifugal casting
SUMITOMO ELECTRIC INDUSTRIES9 citations74
US4994418AFeb 19, 1991
Ceramic compact and a process for the production of the same
SUMITOMO ELECTRIC INDUSTRIES12 citations74
US4383957AMay 17, 1983
Method of sintering a ceramic composition
SUMITOMO ELECTRIC INDUSTRIES15 citations74
US4480013AOct 30, 1984
Substrate for use in semiconductor apparatus
SUMITOMO ELECTRIC INDUSTRIES17 citations73