Inventor

Osamu Maida

Inventor

Tokyo, JP

Overview

1976–1992

Patent span

Physics

Primary field (CPC G)

Patents· 52 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 them69%

G01RMeasuring electric variables8%

H03KPulse technique5%

H03MCoding5%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters3%

C23CCoating metallic material2%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%

G08BSignalling systems, e.g. personal calling systems2%

G08CTransmission systems for measured values, control or similar signals2%

H01FMagnets2%

PatentTitleYear

5,153,632'Flash exposure apparatus for avoiding red-eye effect'1992 4,630,917'Exposure control device of a camera'1986 4,624,540'Film speed setting device for camera'1986 4,600,289'Aperture control system for cameras'1986 4,579,433'Film sensitivity setting device for camera'1986 4,561,741'Camera film feed control apparatus'1985 4,558,935'Camera provided with means for detecting information on film cartridge'1985 4,553,140'Power supply control circuit'1985 4,550,991'Device for detecting code on film cartridge'1985 4,538,893'Motor driven camera'1985 4,538,890'Camera provided with a mechanism for detecting the film speed of a film'1985 4,527,882'Display apparatus for automatic exposure control camera'1985 4,525,637'Integrated circuit having an input voltage-clamping function and an input current-detecting function'1985 4,519,683'Electronic flash apparatus'1985 4,509,847'Automatic exposure control camera having a low brightness warning device'1985 4,494,851'Display unit for flashlight photography'1985 4,468,109'Camera with automatic exposure control and display device'1984 4,465,369'Light measuring device'1984 4,462,670'Light measuring apparatus for camera'1984 4,451,150'Film take-up apparatus in camera usable together with a film magazine device'1984 4,448,506'Exposure control device of a camera'1984 4,436,396'Electroflash unit'1984 4,431,291'Indicating device for a camera'1984 4,422,744'Apparatus for signal transmission and reception between camera and attachment'1983 4,384,777'Electric wind-up device of a camera'1983 4,370,044'Electric wind-up device of a camera'1983 4,365,236'Digital display circuit displayable in analog fashion'1982 4,354,750'Flash unit having a flash output control device'1982 4,353,633'Camera with motor drive device'1982 4,351,600'Flash output control failure warning device of an automatic flash output control speed light'1982 4,350,422'Battery checking device of a motor driven camera'1982 4,340,289'Erroneous exposure preventing device'1982 4,334,745'Exposure indicating device for a camera utilizing analog-digital converter'1982 4,329,036'Power supply circuit for camera'1982 4,322,149'Electric driving device of a camera'1982 4,310,606'Battery voltage checking device'1982 4,294,525'Camera having a digital exposure value display device'1981 4,287,549'Circuit for charging a release magnet energizing capacitor in a camera'1981 4,281,912'Control circuit for camera or motor drive device'1981 4,262,282'Indicator arrangement utilizing analog-digital converter'1981 4,253,750'Power supply control apparatus for camera'1981 4,190,340'Motor drive apparatus for photographic camera'1980 4,072,962'Metering device'1978 4,063,138'Drive circuit for pulse synchronized motor'1977 4,036,555'Electromagnetic trigger device in motor-driven camera capable of time exposure'1977 3,997,832'Circuit for applying starting voltage to load'1976 3,980,400'Electromagnetic trigger device in motor-driven camera capable of bulb exposure'1976 3,971,053'Electromagnetic trigger device for use with camera capable of automatic time exposure'1976 3,964,080'Electromagnetic trigger device in a camera capable of effecting time photography'1976 3,961,342'Remote control photographic apparatus'1976 3,946,410'Electromagnetic trigger device'1976 3,934,178'Device for generating a signal for a predetermined interval after a power switch is opened'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1986Patents assigned to NIPPON KOGAKU KK (51)· patent assignee history

1976–1992Based in Tokyo, JP· patent location history

1985Patents assigned to FUJITSU LTD (1)· patent assignee history

1992Patents assigned to NIKON CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON KOGAKU KK	51	1976–1986
FUJITSU LTD	1	1985
NIKON CORP	1	1992

Locations

Location	Patents	Span
Tokyo, JP	52	1976–1992