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Inventor

Keizo Kato

Inventor
Hachioji, JP

Overview

20→
Patents
1980–2019
Patent span
Physics
Primary field (CPC G)

Patents· 20 as inventor

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

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer21%
H04BTransmission7%
H04NPictorial communication, e.g. television7%
Y10TTechnical subjects covered by former us classification7%
B29DProducing particular articles from plastics or from substances in a plastic state5%
B82YSpecific uses or applications of nanostructures5%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
G01RMeasuring electric variables5%
G06TImage data processing or generation, in general5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
10,523,365Discrimination method and communication system201910,460,414Digital watermark information detecting device and digital watermark information detecting method201910,236,979Transmitter, receiver, communication system, and transmission and reception methods201910,075,239Reproduction device, method, storage medium, and system20189,865,028'Information detecting device, information detecting system, and information detecting method'20189,500,715'Secondary battery tester'20168,564,781'SPR sensor'20138,189,304'Magnetoresistive magnetic head having a cpp element using a heusler alloy layer and a high saturation magnetization layer'20128,107,193'Perpendicular magnetic recording head'20127,843,570'Crystal oscillator sensor and substance adsorption detection method using the sensor'20106,924,246'Lead-free glass compositions for decorating ceramic materials'20055,338,178'Embossing metal hold'19945,330,880'Process for producing optical disks'19945,296,995'Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus'19945,295,121'Magneto-optic recording/reproducing method and device and magneto-optic recording medium used for them'19944,484,488'Forward-reverse changeover apparatus for working vehicle'19844,348,461'Recording member'19824,258,896'Driver\'s seat mounting apparatus for a motor vehicle'19814,241,240'Optical information recording apparatus'19804,223,187'Method and apparatus for recording and reproducing a video-disc with an oscillated track'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1994Patents assigned to HITACHI LTD (7)· patent assignee history
1980–1994Based in Hachioji, JP· patent location history
1981–1984Based in Sakai, JP· patent location history
2010–2016Based in Niigata, JP· patent location history
2012–2013Patents assigned to KATO KEIZO (3)· patent assignee history
2012Patents assigned to HITACHI GLOBAL STORAGE TECH NL (2)· patent assignee history
2012Based in Tokyo, JP· patent location history
2013–2016Patents assigned to KANEKO FUTAO (2)· patent assignee history
2018–2019Patents assigned to FUJITSU LTD (5)· patent assignee history
2018–2019Based in Kawasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD71980–1994
FUJITSU LTD52018–2019
KATO KEIZOself32012–2013
HITACHI GLOBAL STORAGE TECH NL22012
KANEKO FUTAO22013–2016
Locations
LocationPatentsSpan
Hachioji, JP71980–1994
Kawasaki, JP52018–2019
Niigata, JP32010–2016
Tokyo, JP22012
Sakai, JP21981–1984