Inventor

YAMAMOTO HIROMITSU

JP6 patents

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

JAPAN DRILLING CO LTD

2 patents

US6870128B2Mar 22, 2005

Laser boring method and system

JAPAN DRILLING CO LTD61 citations94

US6217258B1Apr 17, 2001

Dual hoist derrick system for deep sea drilling

JAPAN DRILLING CO LTD161 citations92

DAIHATSU DIESEL MFG

1 patent

US4932311AJun 12, 1990

Fluid apparatus

DAIHATSU DIESEL MFG74 citations88

SUMITOMO HEAVY INDUSTRIES

1 patent

US5725072AMar 10, 1998

Speed change gear device with lubricating auxiliary vessel

SUMITOMO HEAVY INDUSTRIES18 citations82

YAMAHA CORP

1 patent

US5930672AJul 27, 1999

Manufacture of semiconductor device having reliable and fine connection hole

YAMAHA CORP14 citations71

IHI MARINE UNITED INC

1 patent

US8025020B2Sep 27, 2011

Auxiliary float of floating structure and method for remodeling floating structure

IHI MARINE UNITED INC0 citations44