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Inventor

Ikuo Katoh

Inventor
Kanagawa, JP

Overview

16→
Patents
1989–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 16 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus17%
B82YSpecific uses or applications of nanostructures14%
H04NPictorial communication, e.g. television14%
H03HImpedance networks, e.g. resonant circuits10%
B01LChemical or physical laboratory apparatus for general use7%
G01NInvestigating or analysing materials by determining their chemical or physical properties7%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%
B41JTypewriters3%
C09DCoating compositions, e.g. paints, varnishes or lacquers3%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers3%
PatentTitleYear
10,780,706Discharging device and discharging method202010,605,716Particle counting apparatus, particle counting method, and particle containing sample20207,369,734'Optical control device'20087,345,733'Light deflection element, light deflection device and image display device'20087,322,700'Image display apparatus'20087,242,839'Optical delay element'20077,215,861'Optical control device'20077,215,842'Light control element and light control device'20077,125,121'Image display apparatus'20067,057,700'Light deflection element, light deflection device and image display device'20066,514,328'Marking ink composition and display medium using the same'20036,475,823'Piezoelectric device with sealed vibration space and manufacturing method thereof'20025,850,166'Piezoelectric ceramic filter circuit and piezoelectric ceramic filter'19985,719,981'Opto-electric device'19985,469,012'Electronic component'19954,818,959'Phase equalizer'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2002Patents assigned to TDK CORP (4)· patent assignee history
1989Based in Chiba, JP· patent location history
1995–2002Based in Tokyo, JP· patent location history
1998–2008Patents assigned to RICOH KK (7)· patent assignee history
1998Based in Yokohama, JP· patent location history
2003–2020Based in Kanagawa, JP· patent location history
2007–2008Patents assigned to NAT UNIV CORP YOKOHAMA NAT UNI (2)· patent assignee history
2020Patents assigned to KATOH IKUO (2)· patent assignee history
2020Patents assigned to RICOH CO LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK71998–2008
TDK CORP41989–2002
KATOH IKUOself22020
NAT UNIV CORP YOKOHAMA NAT UNI22007–2008
RICOH CO LTD22020
Locations
LocationPatentsSpan
Kanagawa, JP112003–2020
Tokyo, JP31995–2002
Yokohama, JP11998
Chiba, JP11989