Inventor

Tadashi Ito

Inventor

Yokohama, JP

Overview

1976–2020

Patent span

Physics

Primary field (CPC G)

Patents· 157 as inventor

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

G03Bprimary

G03BApparatus or arrangements for taking photographs or for projecting or viewing them40%

G03CPhotosensitive materials for photographic purposes14%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

G02BOptical elements, systems or apparatus5%

C09KMaterials for miscellaneous applications, not provided for elsewhere2%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein2%

Y10TTechnical subjects covered by former us classification2%

A61BDiagnosis1%

B23KSoldering or unsoldering1%

B41MPrinting, duplicating, marking, or copying processes1%

PatentTitleYear

10,783,538Relay server for a reward system2020 10,732,401Optical unit having movable body and voice coil motor for moving lens group and endoscope having optical unit2020 10,266,013Pneumatic tire2019 10,232,670Pneumatic tire2019 10,093,134Pneumatic tire2018 8,953,980'Member mounting structure and image forming apparatus'2015 8,537,071'Antenna devices'2013 8,354,148'Optical compensation polarizing plate, image display unit and liquid crystal display unit'2013 7,732,733'Ferritic stainless steel welding wire and manufacturing method thereof'2010 7,671,947'Optical film, optical compensation film, polarizing plate, liquid crystal display unit and self luminous display unit'2010 7,504,139'Optical cellulose acylate film, polarizing plate and liquid crystal display'2009 7,473,446'Retarder and circular polarizer'2009 7,379,131'Liquid crystal display device'2008 7,094,203'Medical imaging apparatus for detection of gamma rays and reflected ultrasonic waves'2006 6,946,659'Apparatus for forming radiation source distribution image'2005 6,890,600'SiC single crystal, method for manufacturing SiC single crystal, SiC wafer having an epitaxial film, method for manufacturing SiC wafer having an epitaxial film, and SiC electronic device'2005 6,822,237'Gamma camera apparatus'2004 6,818,374'Silver halide photographic light-sensitive materials and method for development of the same'2004 6,790,584'Silver halide photographic light-sensitive material'2004 6,710,301'Flux-contained welding wire'2004 6,582,896'Photothermographic material'2003 6,538,890'Heat sink element and high-frequency electronic circuit substrate using such'2003 6,514,662'Photothermographic material'2003 6,458,505'Photothermographic material'2002 6,423,464'Laser ablative recording material'2002 6,329,127'Heat-developable photosensitive material and method for forming image using the same'2001 6,309,814'Heat developable photosensitive material'2001 6,261,739'Laser ablative recording material'2001 6,210,869'Image forming method using heat-developable photosensitive material'2001 6,150,084'Photothermographic element'2000 6,124,075'Laser ablative recording material'2000 6,083,680'Photothermographic material'2000 6,033,760'Magnetic recording medium'2000 5,985,508'Silver halide photographic material'1999 5,889,337'Integrated instrument panel switch assembly'1999 5,853,951'Silver halide photographic material'1998 5,761,847'Plant-growing system and plant-growing method'1998 5,723,267'Silver halide photographic material and the method of processing the same'1998 5,652,088'Silver halide photographic material'1997 5,618,660'Silver halide photographic material and method for processing the same'1997 5,582,959'Method for forming an image'1996 5,508,152'Method for processing a silver halide photographic material'1996 5,464,730'Low replenishment rate process of development of black-and-white silver halide photographic material using a developer having a low bromide ion concentration and a specified pH range'1995 5,420,001'Silver halide photographic material for medical care and an image forming method therefor'1995 5,368,994'Silver halide photographic material'1994 5,348,849'Silver halide photographic material'1994 5,298,372'Method for processing black-and-white silver halide photographic material'1994 5,294,532'Silver halide photographic material and method of processing the same'1994 5,190,855'Silver halide photographic material and method for processing the same'1993 5,098,818'Silver halide photographic material and method for processing thereof'1992 5,028,520'Silver halide photographic material for X-ray use'1991 4,968,595'Silver halide photographic emulsions'1990 4,957,856'Silver halide photographic material'1990 4,933,268'Silver halide photographic material having at least one dyed hydrophilic colloid layer'1990 4,821,056'Shutter speed display device for a camera'1989 4,755,309'Cold working lubricant for metallic conduits'1988 4,743,532'Silver halide photographic emulsion having specific relative standard deviation of the silver chloride content'1988 4,664,496'Camera system'1987 4,642,653'Multi-tone recording method for ink jet printer'1987 4,604,631'Control system and method for charge control ink jet printer'1986 4,534,640'Exposure control system for a camera having a digital computer'1985 4,512,656'Camera system'1985 4,443,086'Focus adjusting device'1984 4,431,595'Fluorine-containing aminosulfonate'1984 4,431,287'Camera'1984 4,429,972'Single lens reflex camera having an electro-magnetic device'1984 RE031370'System for exposure measurement and/or focus detection by means of image sensor'1983 4,382,798'Anti-soiling treating agent'1983 4,364,647'Control device for a camera'1982 4,358,188'Camera having program shutter'1982 4,353,630'Exposure control device for a camera having a digital operation device'1982 4,345,829'Program-controlled camera'1982 4,346,012'Powdery fire-extinguishing agent, and process for its preparation'1982 4,341,953'Focus detecting system'1982 4,329,034'Camera with program system'1982 4,327,982'Device for suppressing mirror bounce in single lens reflex camera'1982 4,315,674'Focal point detecting system'1982 4,304,482'Photographing information setting device in a camera'1981 4,304,472'Camera system'1981 4,297,018'Printed circuit unit for a camera'1981 4,291,960'Display device'1981 4,288,154'Digital information indicating system'1981 4,267,437'Exposure control device for a camera'1981 4,261,659'Exposure indicator control circuit'1981 4,249,816'Photographic camera with a release locking device'1981 4,245,900'Electronic exposure control apparatus'1981 4,243,308'Exposure computation circuit'1981 4,240,055'Release type electromagnetic device for camera'1980 4,238,149'Flash camera system with daylight cutout control'1980 4,219,267'Safety device for exposure factor setting dial'1980 4,203,660'Automatic exposure control system for single reflex camera'1980 4,194,819'Device for confirming the depth of focus of a camera'1980 4,191,458'Photographic information setting display circuit'1980 4,178,085'Photographic camera with a release locking device'1979 4,178,084'Device for measuring light incident on an image forming optical system'1979 4,175,842'Exposure control system for a camera'1979 4,175,848'Photographic information displaying apparatus for a camera'1979 4,167,312'Exposure control circuit for a camera'1979 4,167,332'Indication and photometric unit'1979 4,165,929'Camera with exposure control device'1979 4,163,935'Apparatus for checking a battery voltage'1979 4,162,839'Dual preference camera for digitally displaying preset and computered valves'1979 4,149,795'Digital information transmitting and displaying system for a photographic camera'1979 4,146,317'Dual priority camera'1979 4,145,129'Photographic information display apparatus for camera'1979 4,139,289'Exposure computation circuit'1979 4,137,541'Automatic exposure control apparatus for a single lens reflex camera'1979 4,134,660'Self timer of camera'1979 4,134,654'Printed circuit unit for a camera'1979 4,126,877'Safety device for an exposure amount control equipment'1978 4,125,846'Electronic exposure control apparatus'1978 4,125,832'Digital information conversion system'1978 4,125,848'Exposure control device for a single lens reflex camera'1978 4,118,713'Totally opened F. value information input system of lens for a camera with interchangeable lenses'1978 4,118,716'Photographic mode selection device for a camera'1978 4,106,040'Camera having improved mechanism for shutter actuation and film winding'1978 4,106,033'System for indicating photographing conditions'1978 4,104,649'Adaptor for providing a digital signal indicating the full open F number of an interchangeable photo-taking lens in a single lens reflex camera system'1978 4,103,307'Exposure control device'1978 4,103,308'Digital information input method'1978 4,103,153'Device for measuring light incident on an image forming optical system'1978 4,100,459'Indicator circuit for electronic flash apparatus'1978 4,096,493'Photographic camera having electromagnetic diaphragm control'1978 4,092,652'Exposure information indicating device for a camera'1978 4,090,208'Electronic exposure control apparatus for cameras'1978 4,090,207'Photographic information indication device'1978 4,089,010'Display circuit for a camera'1978 4,089,011'Exposure information setting device for camera'1978 4,086,603'Electrical driving circuit of camera'1978 4,086,581'Exposure control apparatus'1978 4,081,813'Photographic information setting apparatus for camera'1978 4,079,387'Counter circuit for a camera'1978 4,079,386'Camera with digital control device'1978 4,074,292'System for indicating photographic information'1978 4,064,515'Analog to digital converter for a plurality of analog channels'1977 4,062,022'Device for preventing erroneous handling of a camera'1977 4,057,809'Exposure control circuit'1977 4,057,522'Liquid adhesive composition'1977 4,053,909'Data registering equipment for a camera'1977 4,052,727'Exposure control device for a single lens reflex camera'1977 4,048,811'Combination of air conditioner and ventilating unit provided with total heat exchanger assembly'1977 4,047,187'System for exposure measurement and/or focus detection by means of image senser'1977 4,045,807'Automatic exposure control apparatus which prevents simultaneous diaphragm and shutter speed preselection'1977 4,037,233'Exposure control device for a camera'1977 4,034,383'Exposure control device'1977 4,032,933'Indication system of a camera'1977 4,029,421'Digital exposure meter'1977 4,028,712'Display system for photographic camera'1977 4,015,198'Shutter-time-preference single lens reflex camera with automatic film wind-up'1977 4,015,149'Temperature compensating device for devices having semiconductors'1977 4,011,569'Exposure control system for a camera'1977 4,003,766'Welding materials for aluminum-coated steel'1977 3,994,007'Automatic flash photography apparatus'1976 3,982,254'Digital indication system for a camera'1976 3,971,048'Exposure value display system for a camera'1976 3,971,047'Single lens reflex camera having an electric shutter'1976 3,930,807'Plastic molding having satin finish type metallic luster'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1989Patents assigned to CANON KK (91)· patent assignee history

1976–1987Based in Yokohama, JP· patent location history

1976–2015Based in Kanagawa, JP· patent location history

1982–1984Patents assigned to DAINIPPON INK & CHEMICALS (3)· patent assignee history

1988–2004Patents assigned to FUJI PHOTO FILM CO LTD (33)· patent assignee history

1997–2013Based in Minami-ashigara, JP· patent location history

2004–2006Patents assigned to ANZAI MEDICAL KABUSHIKI KAISHA (3)· patent assignee history

2004–2006Based in Kiryu, JP· patent location history

2008–2013Patents assigned to FUJIFILM CORP (5)· patent assignee history

2018–2019Based in Kobe, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	91	1976–1989
FUJI PHOTO FILM CO LTD	33	1988–2004
FUJIFILM CORP	5	2008–2013
ANZAI MEDICAL KABUSHIKI KAISHA	3	2004–2006
DAINIPPON INK & CHEMICALS	3	1982–1984

Locations

Location	Patents	Span
Yokohama, JP	81	1976–1987
Kanagawa, JP	38	1976–2015
Minami-ashigara, JP	14	1997–2013
Kobe, JP	3	2018–2019
Kiryu, JP	3	2004–2006