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Inventor

Tsunefumi Tanaka

Inventor
Kanagawa, JP

Overview

65→
Patents
1986–2015
Patent span
Physics
Primary field (CPC G)

Patents· 65 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus70%
H04NPictorial communication, e.g. television21%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them6%
G06TImage data processing or generation, in general2%
PatentTitleYear
8,988,538'Image pickup apparatus and lens apparatus'20158,659,672'Image processing apparatus and image pickup apparatus using same'20148,565,524'Image processing apparatus, and image pickup apparatus using same'20138,520,313'Zoom lens and image pickup device including the same'20137,961,404'Zoom lens'20117,876,507'Zoom lens'20117,457,045'Zoom lens'20087,258,452'Projection optical system and a projection type image display apparatus'20076,842,280'Optical element and optical apparatus'20056,812,447'Image pickup apparatus having a wave synthesizer for incident and reference light'20046,785,060'Reflecting type optical system'20046,639,729'Reflecting type of zoom lens'20036,636,360'Reflecting type of zoom lens'20036,507,359'Image display system'20036,426,841'Optical apparatus'20026,366,411'Reflecting type optical system'20026,351,333'Optical element and optical system having the same'20026,301,064'Optical apparatus'20016,292,309'Reflecting type of zoom lens'20016,215,596'Optical element, optical device provided therewith, and method for evaluating optical element'20016,208,811'Automatic focussing system'20016,188,521'Image displaying apparatus having magnification-changing system'20016,166,866'Reflecting type optical system'20006,124,986'Zoom optical system and image pickup apparatus'20006,023,253'Image displaying apparatus'20006,021,004'Reflecting type of zoom lens'20005,905,597'Optical apparatus'19995,905,848'Image pickup apparatus with vibration compensation'19995,844,713'Image displaying apparatus'19985,757,423'Image taking apparatus'19985,739,960'Zoom lens device with five lens units'19985,694,165'High definition image taking apparatus having plural image sensors'19975,663,833'Image display apparatus'19975,580,142'Image forming apparatus and projector using the same'19965,576,890'Zoom lens'19965,568,321'Zoom lens'19965,528,427'Zoom lens'19965,325,236'Ultra-wide-angle type zoom lens'19945,229,886'Zoom lens'19935,179,473'Zoom lens'19935,096,288'Projection apparatus'19925,059,007'Internally focusing zoom lens'19915,053,798'Automatic focusing device'19914,912,494'Camera system'19904,912,493'Camera system'19904,865,434'Zoom lens capable of selecting a focal length beyond a standard focal length range'19894,861,147'Zoom lens system'19894,842,385'Zoom lens'19894,840,468'Focusing method for zoom lens'19894,830,477'Zoom lens capable of obtaining focal lengths beyond a variable focal length range'19894,789,227'Zoom lens'19884,781,446'Zoom lens having a capability of introducing special features into image formats'19884,776,680'High range zoom lens of reduced size'19884,749,265'Zoom lens'19884,716,284'Photographic optical system having enhanced spectral transmittance characteristics'19874,711,534'Zoom lens able to obtain focal lengths beyond the zooming range'19874,702,567'Zoom lens'19874,695,133'High range zoom lens'19874,690,513'Wide angle high range zoom lens'19874,687,302'Zoom lens'19874,666,257'Compact zoom lens'19874,639,096'High range zoom lens'19874,629,294'Zoom lens'19864,586,793'Zoom lens'19864,575,198'Lens system'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2015Patents assigned to CANON KK (64)· patent assignee history
1986–2007Based in Kanagawa, JP· patent location history
1990–2014Based in Yokohama, JP· patent location history
1992Based in Yokohoma, JP· patent location history
2001Patents assigned to CANON KABUHSIKI KAISHA (1)· patent assignee history
2013–2014Patents assigned to TANAKA TSUNEFUMI (3)· patent assignee history
2013–2014Patents assigned to HATAKEYAMA KOSHI (2)· patent assignee history
2013–2014Patents assigned to TAMURA NOBUHIKO (2)· patent assignee history
2015Based in Utsunomiya, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK641986–2015
TANAKA TSUNEFUMIself32013–2014
HATAKEYAMA KOSHI22013–2014
TAMURA NOBUHIKO22013–2014
CANON KABUHSIKI KAISHA12001
Locations
LocationPatentsSpan
Kanagawa, JP341986–2007
Yokohama, JP291990–2014
Utsunomiya, JP12015
Yokohoma, JP11992