Inventor

Yuji Yamakawa

Inventor

Wako, JP

Overview

6→

Patents

2000–2017

Patent span

Chemistry

Primary field (CPC C)

Patents· 6 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C25Bprimary

C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals33%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution33%

G02BOptical elements, systems or apparatus17%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein17%

PatentTitleYear

9,580,821'Control method of differential pressure water electrolysis system'2017 9,487,874'Method for operating the water electrolysis system'2016 8,936,712'Water electrolysis system and method for operating the same'2015 8,679,305'High-pressure hydrogen producing apparatus'2014 6,388,722'Back light system for minimizing non-display area of liquid crystal display device'2002 6,147,724'Back light system for minimizing non display area of liquid crystal display device'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000–2002Patents assigned to HITACHI DEVICE ENG (2)· patent assignee history

2000–2002Patents assigned to HITACHI LTD (2)· patent assignee history

2000–2002Based in Okinawa-ken, JP· patent location history

2014–2017Patents assigned to HONDA MOTOR CO LTD (4)· patent assignee history

2014–2015Patents assigned to ISHIKAWA HIROYUKI (2)· patent assignee history

2014–2015Patents assigned to NAKAZAWA KOJI (2)· patent assignee history

2014–2017Based in Wako, JP· patent location history

2015–2016Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HONDA MOTOR CO LTD	4	2014–2017
HITACHI DEVICE ENG	2	2000–2002
HITACHI LTD	2	2000–2002
ISHIKAWA HIROYUKI	2	2014–2015
NAKAZAWA KOJI	2	2014–2015

Locations

Location	Patents	Span
Wako, JP	2	2014–2017
Saitama, JP	2	2015–2016
Okinawa-ken, JP	2	2000–2002