Inventor

Takao Kawaguchi

Inventor

Hirakata, JP

Overview

6→

Patents

1987–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 6 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein20%

H01JElectric discharge tubes or discharge lamps13%

C23CCoating metallic material7%

G01RMeasuring electric variables7%

G09FDisplaying7%

G09GArrangements or circuits for control of indicating devices using static means to present variable information7%

H01LSemiconductor devices7%

H04NPictorial communication, e.g. television7%

H05KPrinted circuits7%

H10DInorganic electric semiconductor devices7%

PatentTitleYear

11,094,509Plasma processing apparatus2021 6,946,798'Plasma display apparatus'2005 4,940,934'Method of electrically testing active matrix substrate'1990 4,938,566'Display apparatus'1990 4,778,560'Method for production of thin film transistor array substrates'1988 4,715,680'Optical switch'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2005Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (5)· patent assignee history

1987Based in Moriguchi, JP· patent location history

1988–1990Based in Hirakata, JP· patent location history

2005Based in Osaka, JP· patent location history

2021Patents assigned to HITACHI HIGH TECH CORP (1)· patent assignee history

2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	5	1987–2005
HITACHI HIGH TECH CORP	1	2021

Locations

Location	Patents	Span
Hirakata, JP	3	1988–1990
Tokyo, JP	1	2021
Osaka, JP	1	2005
Moriguchi, JP	1	1987