Inventor

YAMAMOTO RISA

JP4 patents

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

YAMAMOTO RISA

2 patents

US8322131B2Dec 4, 2012

Internal combustion engine exhaust gas cleaning apparatus and exhaust gas cleaning method

YAMAMOTO RISA4 citations51

US9028598B2May 12, 2015

Diesel engine exhaust purification system

YAMAMOTO RISA0 citations30

KOMATSU MFG CO LTD

1 patent

US8794673B2Aug 5, 2014

Hydraulic excavator

KOMATSU MFG CO LTD3 citations53

NISHIZAWA TORU

1 patent

US8999048B2Apr 7, 2015

Exhaust gas purifying apparatus for diesel engine

NISHIZAWA TORU0 citations30