Inventor
OTSUKA KOKI
JP10 patents
⚠️ This page may combine multiple inventors who share the name “OTSUKA KOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI METALS LTD
5 patentsUS6383310B1May 7, 2002
Exhaust equipment member, internal combustion engine system using same, and method for producing such exhaust equipment member
HITACHI METALS LTD22 citations92
US5784881AJul 28, 1998
Multi-part exhaust manifold assembly with welded connections
HITACHI METALS LTD30 citations92
USD376602SDec 17, 1996
Exhaust manifold for an internal combustion engine
HITACHI METALS LTD27 citations91
USD372250SJul 30, 1996
Exhaust manifold for an internal combustion engine
HITACHI METALS LTD25 citations91
US7503304B2Mar 17, 2009
Internal engine piston and its production method
HITACHI METALS LTD14 citations82
TOSHIBA KK
3 patentsUS5636323AJun 3, 1997
Speech communication apparatus having an echo canceler
TOSHIBA KK38 citations92
US5400399AMar 21, 1995
Speech communication apparatus equipped with echo canceller
TOSHIBA KK45 citations92
US5379338AJan 3, 1995
Radiotelephone with handset talking function and hand-free talking function
TOSHIBA KK33 citations92