Inventor

YAMANAKA HIROAKI

9 patents

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

NIPPON STEEL CORP

2 patents

US4391702AJul 5, 1983

Method for classification of coals for coke production

NIPPON STEEL CORP19 citations77

US4310412AJan 12, 1982

Method for classification of coals for coke production

NIPPON STEEL CORP11 citations65

FUJITSU SEMICONDUCTOR LTD

2 patents

US7788573B2Aug 31, 2010

Fault detection method, test circuit and semiconductor device

FUJITSU SEMICONDUCTOR LTD7 citations71

US7952410B2May 31, 2011

Semiconductor device and voltage-controlled oscillation circuit

FUJITSU SEMICONDUCTOR LTD2 citations60

NSK LTD

2 patents

US11306774B2Apr 19, 2022

Tapered roller bearing

NSK LTD2 citations66

US11846317B2Dec 19, 2023

Tapered roller bearing

NSK LTD0 citations55

SONY CORP

1 patent

US7551450B2Jun 23, 2009

External memory device

SONY CORP29 citations92

FUJITSU LTD

1 patent

US7315213B2Jan 1, 2008

Semiconductor device and voltage-controlled oscillation circuit

FUJITSU LTD6 citations71

FUJITSU MICROELECTRONICS LTD

1 patent

US7622959B2Nov 24, 2009

Phase comparator and semiconductor device with phase comparator

FUJITSU MICROELECTRONICS LTD2 citations60