P

Inventor

NAKAJIMA TOORU

JP15 patents
⚠️ This page may combine multiple inventors who share the name “NAKAJIMA TOORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI PENCIL CO

7 patents
US10336129B2Jul 2, 2019

Writing implement

MITSUBISHI PENCIL CO4 citations72
US9889701B2Feb 13, 2018

Writing implement

MITSUBISHI PENCIL CO3 citations72
US9636940B2May 2, 2017

Writing instrument

MITSUBISHI PENCIL CO2 citations70
US11207913B2Dec 28, 2021

Erasing member and erasing tool using the same

MITSUBISHI PENCIL CO0 citations59
US11472221B2Oct 18, 2022

Writing implement

MITSUBISHI PENCIL CO0 citations55
US10507684B2Dec 17, 2019

Writing instrument

MITSUBISHI PENCIL CO0 citations51
US10576774B2Mar 3, 2020

Ballpoint pen

MITSUBISHI PENCIL CO0 citations37

HITACHI IND EQUIPMENT SYS

2 patents
US7394668B2Jul 1, 2008

Switching power supply circuit and frequency converter

HITACHI IND EQUIPMENT SYS7 citations73
US7151680B2Dec 19, 2006

Switching power supply circuit and frequency converter

HITACHI IND EQUIPMENT SYS3 citations62

BESTEX KK

1 patent
US5143752ASep 1, 1992

Filtering material of apatite and glucan used for surgical masks and method of making it

BESTEX KK33 citations90

NEC CORP

1 patent
USD293317SDec 22, 1987

Digital telephone and data exchange equipment cabinet

NEC CORP27 citations86

HITACHI LTD

1 patent
US6873240B2Mar 29, 2005

Power converter

HITACHI LTD7 citations73

PIONEER ELECTRONIC CORP

1 patent
US5353379AOct 4, 1994

Information reproducing apparatus and game machine including the same

PIONEER ELECTRONIC CORP2 citations61

SAWA YUKINORI

1 patent
US8944716B2Feb 3, 2015

Valved applicator

SAWA YUKINORI3 citations54

HITACHI IND EQUUIPMENT SYSTEMS

1 patent
US6927665B2Aug 9, 2005

Power converter

HITACHI IND EQUUIPMENT SYSTEMS1 citations45