Inventor
TOYAMA KOICHI
JP28 patents
⚠️ This page may combine multiple inventors who share the name “TOYAMA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON DENSO CO
14 patentsUS5706185AJan 6, 1998
Control apparatus for a lighting system of a discharge lamp used in various types of vehicles
NIPPON DENSO CO19 citations92
US5600208AFeb 4, 1997
Discharge lamp unit having separable high-voltage transformer safeguard
NIPPON DENSO CO27 citations92
US6291945B1Sep 18, 2001
Discharge lamp lighting device
NIPPON DENSO CO17 citations84
US4773380ASep 27, 1988
Current flowing time period control system for ignition coil of internal combustion engine
NIPPON DENSO CO21 citations81
US4167927ASep 18, 1979
Contactless ignition control system with a dwell time control circuit for an internal combustion engine
NIPPON DENSO CO20 citations77
US5216369AJun 1, 1993
Ignition occurrence detecting device for use in an ignition apparatus
NIPPON DENSO CO12 citations74
US5404854AApr 11, 1995
Knock control system for internal combustion engine
NIPPON DENSO CO11 citations73
US4094556AJun 13, 1978
Anti-skid system for a vehicle
NIPPON DENSO CO19 citations73
US4033634AJul 5, 1977
Antiskid control device for vehicles
NIPPON DENSO CO17 citations73
US4572151AFeb 25, 1986
Ignition system for internal combustion engines
NIPPON DENSO CO6 citations63
US4475520AOct 9, 1984
Contactless erroneous ignition prevention type ignition system for internal combustion engine
NIPPON DENSO CO3 citations63
US4027926AJun 7, 1977
Anti-skid control system for vehicles
NIPPON DENSO CO4 citations62
US4809668AMar 7, 1989
Ignition system for internal combustion engine
NIPPON DENSO CO3 citations61
US4741319AMay 3, 1988
Ignition system for internal combustion engines
NIPPON DENSO CO3 citations61
DENSO CORP
9 patentsUS6710545B2Mar 23, 2004
Discharge lamp apparatus having directly coupled lamp and electronic controller
DENSO CORP22 citations92
US5910712AJun 8, 1999
Method and apparatus for reduced discharge lamp driver test time
DENSO CORP20 citations92
US5751121AMay 12, 1998
High voltage discharge bulb control
DENSO CORP25 citations92
US6720740B2Apr 13, 2004
Discharge lamp ballast circuit having snubber circuit
DENSO CORP8 citations74
US5880563AMar 9, 1999
Device for accurately detecting end of usage lifetime of a discharge lamp
DENSO CORP16 citations74
US6700328B2Mar 2, 2004
Discharge lamp driver circuit designed to minimize radiation or noise
DENSO CORP3 citations63
US6642668B2Nov 4, 2003
Discharge lamp device for reducing noise radiation and surge pulse current
DENSO CORP4 citations62
US6672747B2Jan 6, 2004
Vehicle headlamp having removable lighting control unit
DENSO CORP6 citations54
US6670778B2Dec 30, 2003
AC power generating apparatus having electrolytic capacitor and ceramic capacitor
DENSO CORP0 citations52