P

Inventor

HIWASA YONEO

JP5 patents
⚠️ This page may combine multiple inventors who share the name “HIWASA YONEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI MATERIALS CORP

3 patents
US5139099AAug 18, 1992

Excavation tool

MITSUBISHI MATERIALS CORP31 citations87
US9551190B2Jan 24, 2017

Excavation tool

MITSUBISHI MATERIALS CORP6 citations70
US5113954AMay 19, 1992

Excavation tool

MITSUBISHI MATERIALS CORP5 citations58

HISADA MASAYA

1 patent
US8430977B2Apr 30, 2013

Hollow drilling steel rod and method of manufacturing the same

HISADA MASAYA6 citations61

HIWASA YONEO

1 patent
US8550191B2Oct 8, 2013

Digging tool, digging bit, and device

HIWASA YONEO3 citations54