Inventor

Toyohiko Kiyohara

Inventor

Minato-ku, JP

Overview

5→

Patents

1985–2016

Patent span

Electricity

Primary field (CPC H)

Patents· 5 as inventor

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

H10Fprimary

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation15%

C21CProcessing of pig-iron, e.g. refining, manufacture of wrought-iron or steel8%

F27BFurnaces, kilns, ovens or retorts in general8%

F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace8%

G01RMeasuring electric variables8%

G02BOptical elements, systems or apparatus8%

G05FSystems for regulating electric or magnetic variables8%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%

H05BElectric heating8%

H10DInorganic electric semiconductor devices8%

PatentTitleYear

9,255,958'Ground fault detection circuit'2016 7,723,871'Heating power supply apparatus'2010 5,960,027'Apparatus for controlling arc deflection in an arc furnace'1999 4,677,454'Thyristor with self-centering housing means'1987 4,500,164'Light triggered thyristor, including a light guide, whose parameters are related by an equation'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1999Patents assigned to MITSUBISHI ELECTRIC CORP (3)· patent assignee history

1985Based in Hyogo, JP· patent location history

1987Based in Itami, JP· patent location history

1999Based in Tokyo, JP· patent location history

2010–2016Patents assigned to TOSHIBA MITSUBISHI ELEC INC (2)· patent assignee history

2010–2016Based in Minato-ku, JP· patent location history

2016Patents assigned to KIYOHARA TOYOHIKO (1)· patent assignee history

2016Patents assigned to TANABE TOMOAKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI ELECTRIC CORP	3	1985–1999
TOSHIBA MITSUBISHI ELEC INC	2	2010–2016
KIYOHARA TOYOHIKOself	1	2016
TANABE TOMOAKI	1	2016

Locations

Location	Patents	Span
Minato-ku, JP	2	2010–2016
Tokyo, JP	1	1999
Itami, JP	1	1987
Hyogo, JP	1	1985