Inventor
OKUTOMI TSUTOMU
JP29 patents
⚠️ This page may combine multiple inventors who share the name “OKUTOMI TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
25 patentsUS6210809B1Apr 3, 2001
Contact material
TOSHIBA KK42 citations92
US4917642AApr 17, 1990
Air-tight ceramic container
TOSHIBA KK30 citations91
US4830821AMay 16, 1989
Process of making a contact forming material for a vacuum valve
TOSHIBA KK18 citations81
US4777335AOct 11, 1988
Contact forming material for a vacuum valve
TOSHIBA KK15 citations81
US5726407AMar 10, 1998
Contact electrode for vacuum interrupter
TOSHIBA KK7 citations74
US5500499AMar 19, 1996
Contacts material for vacuum valve
TOSHIBA KK13 citations74
US6346683B1Feb 12, 2002
Vacuum interrupter and vacuum switch thereof
TOSHIBA KK8 citations73
US6024896AFeb 15, 2000
Contacts material
TOSHIBA KK10 citations73
US5698008ADec 16, 1997
Contact material for vacuum valve and method of manufacturing the same
TOSHIBA KK5 citations73
US5420384AMay 30, 1995
Contact material for a vacuum interrupter
TOSHIBA KK14 citations73
US6107582AAug 22, 2000
Vacuum valve
TOSHIBA KK7 citations72
US5354352AOct 11, 1994
Contact material for vacuum circuit breakers
TOSHIBA KK11 citations72
US5246512ASep 21, 1993
Contact for a vacuum interrupter
TOSHIBA KK8 citations72
US5056702AOct 15, 1991
Method of manufacturing a semiconductor device
TOSHIBA KK15 citations72
US6080952AJun 27, 2000
Electrode arrangement of vacuum circuit breaker with magnetic member for longitudinal magnetization
TOSHIBA KK15 citations71
US5149362ASep 22, 1992
Contact forming material for a vacuum interrupter
TOSHIBA KK9 citations71
US5045281ASep 3, 1991
Contact forming material for a vacuum interrupter
TOSHIBA KK14 citations71
US5403543AApr 4, 1995
Process for manufacturing a contact material for vacuum circuit breakers
TOSHIBA KK8 citations70
US5109145AApr 28, 1992
Vacuum interrupter contacts and process for producing the same
TOSHIBA KK10 citations69
US5409519AApr 25, 1995
Contact material for vacuum valve
TOSHIBA KK5 citations63
US6303076B1Oct 16, 2001
Contact material for contacts for vacuum interrupter and method of manufacturing the contact
TOSHIBA KK4 citations62
US6027821AFeb 22, 2000
Contact material for vacuum interrupter and method for producing the same
TOSHIBA KK3 citations62
US5972068AOct 26, 1999
Contact material for vacuum valve
TOSHIBA KK3 citations62
US5294761AMar 15, 1994
Vacuum interrupter
TOSHIBA KK3 citations60
US5882448AMar 16, 1999
Contact material for vacuum valve and method of manufacturing the same
TOSHIBA KK0 citations51
TOKYO SHIBAURA ELECTRIC CO
4 patentsUS4345130AAug 17, 1982
Electrical contact
TOKYO SHIBAURA ELECTRIC CO18 citations68
US4129760ADec 12, 1978
Vacuum circuit breaker
TOKYO SHIBAURA ELECTRIC CO4 citations62
US4489291ADec 18, 1984
Circuit breaker provided with parallel resistor
TOKYO SHIBAURA ELECTRIC CO5 citations57
US4129761ADec 12, 1978
Vacuum circuit breaker
TOKYO SHIBAURA ELECTRIC CO2 citations55