P

Inventor

OKUNO AKIYASU

JP20 patents
⚠️ This page may combine multiple inventors who share the name “OKUNO AKIYASU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NGK SPARK PLUG CO

18 patents
US4840853AJun 20, 1989

Surface structure of AlN substrate and a process for producing the same

NGK SPARK PLUG CO68 citations96
US4946807AAug 7, 1990

Composite ceramic material reinforced with silicon carbide whiskers

NGK SPARK PLUG CO24 citations92
US4701426AOct 20, 1987

Silicon carbide-graphite composite material

NGK SPARK PLUG CO31 citations92
US4695517ASep 22, 1987

Composite layer aluminum nitride base sintered body

NGK SPARK PLUG CO26 citations92
US4690909ASep 1, 1987

Silicon carbide-graphite composite material and process for producing same

NGK SPARK PLUG CO30 citations92
US4668452AMay 26, 1987

Process for producing silicon carbide heating elements

NGK SPARK PLUG CO33 citations92
US4336216AJun 22, 1982

Process for producing silicon carbide heating elements

NGK SPARK PLUG CO21 citations82
US4877760AOct 31, 1989

Aluminum nitride sintered body with high thermal conductivity and process for producing same

NGK SPARK PLUG CO20 citations81
US4800137AJan 24, 1989

Composite layer aluminum nitride base sintered body

NGK SPARK PLUG CO23 citations81
US4956317ASep 11, 1990

Whisker-reinforced ceramics

NGK SPARK PLUG CO11 citations74
US4892703AJan 9, 1990

Surface structure of A1N substrate and a process for producing the same

NGK SPARK PLUG CO14 citations74
US4638268AJan 20, 1987

Microwave absorber comprised of a dense silicon carbide body which is water cooled

NGK SPARK PLUG CO15 citations74
US4997798AMar 5, 1991

Process for producing aluminum nitride sintered body with high thermal conductivity

NGK SPARK PLUG CO12 citations73
US4961987AOct 9, 1990

Aluminum nitride sintered body with high thermal conductivity and process for producing same

NGK SPARK PLUG CO10 citations73
US4375517AMar 1, 1983

Sintered cubic boron nitride and process for producing the same

NGK SPARK PLUG CO17 citations73
US5439854AAug 8, 1995

TiC-base/SiC whisker composite ceramic cutting tools

NGK SPARK PLUG CO9 citations72
US4760312AJul 26, 1988

Dense silicon carbide microwave absorber for electron linear accelerator

NGK SPARK PLUG CO5 citations63
US5601764AFeb 11, 1997

Process for making TiC-base/SiC whisker composite ceramic cutting tools

NGK SPARK PLUG CO4 citations61

TOKYO ELECTRIC POWER CO

2 patents