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Inventor

Seiji Kado

Inventor
Tokyo, JP

Overview

10→
Patents
1993–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 10 as inventor

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

H01Qprimary
H01QAntennas, i.e. radio aerials28%
G03GElectrography17%
H01PWaveguides11%
B41JTypewriters6%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables6%
C09DCoating compositions, e.g. paints, varnishes or lacquers6%
G08CTransmission systems for measured values, control or similar signals6%
H03HImpedance networks, e.g. resonant circuits6%
H04BTransmission6%
H05KPrinted circuits6%
PatentTitleYear
10,686,423Phase-shifting circuit and antenna device202010,454,164Antenna device201910,439,296Antenna device20197,026,993'Planar antenna and array antenna'20066,239,753'Transmitter-and-receiver device'20016,205,314'Developing roller with a coating layer, developer restricting mechanism and developing device incorporating same'20015,812,153'Ink jet printing apparatus capable of simultaneously printing an image on both sides of printing sheet'19985,615,877'Sheet transporting device for use in an image forming apparatus'19975,506,295'Ink'19965,273,853'Black photoconductive toner having sensitivity to light in the wavelength range of semiconductor lasers'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–1998Patents assigned to MITA INDUSTRIAL CO LTD (4)· patent assignee history
1993–2001Based in Minoo, JP· patent location history
1996–1998Based in Osaka, JP· patent location history
2001Patents assigned to KYOCERA MITA CORP (1)· patent assignee history
2001Patents assigned to OMRON TATEISI ELECTRONICS CO (1)· patent assignee history
2001Based in Kyoto, JP· patent location history
2006Patents assigned to HITACHI CABLE (1)· patent assignee history
2006–2019Based in Tokyo, JP· patent location history
2019–2020Patents assigned to HITACHI METALS LTD (3)· patent assignee history
2020Based in Oyama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITA INDUSTRIAL CO LTD41993–1998
HITACHI METALS LTD32019–2020
HITACHI CABLE12006
KYOCERA MITA CORP12001
OMRON TATEISI ELECTRONICS CO12001
Locations
LocationPatentsSpan
Tokyo, JP32006–2019
Osaka, JP31996–1998
Minoo, JP21993–2001
Oyama, JP12020
Kyoto, JP12001