Inventor

Tadao Takagi

Inventor

Yokohama, JP

Overview

1978–2021

Patent span

Physics

Primary field (CPC G)

Patents· 110 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 them43%

H02NElectric machines not otherwise provided for28%

G02BOptical elements, systems or apparatus13%

H04NPictorial communication, e.g. television7%

A63FCard, board, or roulette games1%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof1%

F16FSprings1%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light1%

G01SRadio direction-finding1%

G05DSystems for controlling or regulating non-electric variables1%

PatentTitleYear

11,088,585Motor with potting section and hole provided with cap through which winding is inserted2021 7,487,098'Method for maintaining product and maintenance business system for product'2009 6,611,081'Vibration actuator with two vibration modes'2003 6,252,332'Ultrasonic motor'2001 6,091,179'Vibration actuator drive device and method of use'2000 6,078,438'Vibration actuator and lens barrel'2000 5,990,597'Ultrasonic motor having high drive efficiency'1999 5,986,383'Drive device and information recording and processing device'1999 5,939,847'Drive control device for ultrasonic motors'1999 5,932,952'Vibration motor having a two-phase drive of a longitudinal vibration and a bending vibration mode'1999 5,917,268'Vibration driven motor'1999 5,898,164'Recording medium processing device having a vibration actuator and for use in an automatic device such as a pachinko machine'1999 5,870,634'Image blur suppression device utilizing a vibration motor'1999 5,852,336'Vibration actuator which effectively transmits micro-amplitude vibrations'1998 5,850,117'Vibration Actuator and adjustment method therefor'1998 5,821,667'Ultrasonic motor'1998 5,821,670'Vibration acutuator'1998 RE035877'Automatic light modulating camera'1998 RE035852'Power supply frequency regulating device for vibration wave driven motor'1998 5,777,671'Solid state imager having high frequency transfer mode'1998 5,765,045'Camera capable of detecting eye-gaze'1998 5,744,897'Driving control device for vibration wave motor'1998 5,742,852'Photometry system'1998 5,740,481'Exposure calculation device for camera'1998 5,726,518'Supporting device of relative moving element of vibration actuator or vibration motor'1998 5,723,935'Vibration driven motor'1998 5,719,462'Ultrasonic motor having improved stator'1998 5,717,459'Solid state imager device having A/D converter'1998 5,714,988'Camera capable of detecting eye-gaze'1998 5,710,491'Driving control device for vibration wave motor'1998 5,710,948'Camera system with color temperature meter'1998 5,698,930'Ultrasonic wave motor and method of manufacture'1997 5,686,776'Ultrasonic motor having high drive efficiency'1997 5,687,407'Exposure calculation device for camera'1997 5,664,242'Automatic exposure device and photometry device in a camera'1997 5,661,360'Ultrasonic motor having high drive efficiency'1997 5,655,161'Photometric device for a camera'1997 5,642,162'Charge transfer device having a signal processing circuit for correcting output voltage'1997 5,625,247'Vibration driven motor'1997 5,623,703'Camera capable of detecting eye-gaze'1997 5,614,970'Flash lighting apparatus and a camera equipped with the flash lighting apparatus'1997 5,598,243'Camera having removable viewfinder and visual line detection device'1997 5,596,387'Auto-exposure device of a camera'1997 5,576,800'Camera having an auxiliary photographing function'1996 5,576,798'Automatic flash amount control apparatus of camera'1996 5,554,906'Ultrasonic motor'1996 5,543,879'Driving apparatus'1996 5,534,968'Camera having variable photometry conditions'1996 5,504,553'Automatic light adjustment apparatus for a camera on which a photographic lens can be freely mounted'1996 5,504,550'Camera which performs photographic adjustments based on the visual line of the photographer'1996 5,499,075'Photometric apparatus for a camera'1996 5,495,312'Camera exposure calculation device dependent on type of scene to be photographed and focus condition detecting device dependent on camera attitude'1996 5,489,964'Camera'1996 5,486,893'Camera having a display for predicted images'1996 5,475,466'Camera having target follow up function'1995 5,473,155'Photometric sensor'1995 5,451,827'Ultrasonic motor having a supporting member'1995 5,452,049'Camera with adjustment and recording of color temperature'1995 5,448,330'Divided radiation type flashlight system'1995 5,446,331'Ultrasonic wave motor'1995 5,442,417'Automatic flash amount control apparatus of camera'1995 5,440,191'Ultrasonic motor'1995 5,434,640'Exposure calculation device for camera'1995 5,430,343'Drive circuit for an ultrasonic motor'1995 5,424,798'Color temperature adjusting device'1995 5,424,797'Flash lighting apparatus'1995 5,418,595'Camera having a subject tracking function and method therefor'1995 5,404,065'Ultrasonic actuator'1995 5,402,201'Automatic flash control device of camera'1995 5,400,112'Photometric apparatus for a camera'1995 5,397,955'Ultrasonic actuator'1995 5,381,208'Automatic light adjustment device for camera'1995 5,373,340'Camera system'1994 5,371,568'Automatic flash limiting apparatus in a camera'1994 5,333,029'Camera capable of detecting eye-gaze'1994 5,319,416'Exposure calculation device for camera'1994 5,313,246'Exposure control device in a camera'1994 5,309,193'Camera with automatic light adjusting device'1994 5,268,730'Automatic light modulating camera'1993 5,266,983'Camera having the plural photograph function'1993 5,266,985'Camera with optimum composition determinator'1993 RE034409'Drive circuit for surface-wave driven motor utilizing ultrasonic vibration'1993 5,249,015'Exposure calculation device'1993 5,245,381'Apparatus for ordering to phototake with eye-detection'1993 5,239,333'Camera exposure calculation device dependent on type of scene to be photographed'1993 5,239,337'Apparatus for ordering to phototake with eye-detection'1993 5,231,448'Photometric apparatus for a camera'1993 5,231,447'Automatic light adjustment camera and exchangable lenses therefor'1993 5,218,397'Automatic exposure control apparatus for a camera'1993 5,204,577'Ultrasonic motor improved in driving efficiency'1993 5,172,157'Automatic light adjustment device for cameras'1992 5,066,884'Ultrasonic motor having high drive efficiency'1991 5,061,882'Power supply frequency regulating device for vibration wave driven motor'1991 5,019,853'Exposure control apparatus for use in camera'1991 5,016,039'Camera system'1991 5,006,879'Electronic flash lighting device for camera'1991 5,003,338'Exposure control device for camera'1991 4,984,007'Exposure control apparatus for camera'1991 4,972,222'Exposure controlling apparatus for camera'1990 4,965,620'Camera'1990 4,951,082'Three-dimensional multi-pattern photo-metering apparatus'1990 4,914,337'Power supply frequency regulating device for vibration wave driven motor'1990 4,905,035'Camera'1990 4,809,030'Camera'1989 4,743,788'Input frequency control device for surface acoustic wave motor'1988 4,627,699'Automatic focusing adaptor for camera lens'1986 4,510,411'Drive circuit for surface-wave driven motor utilizing ultrasonic vibration'1985 4,482,234'Automatic focusing device'1984 4,451,729'Automatic focusing device and lens motor control'1984 4,094,292'Hot starter system for engines'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to HONDA MOTOR CO LTD (1)· patent assignee history

1978Based in Saitama, JP· patent location history

1984–1998Patents assigned to NIPPON KOGAKU KK (8)· patent assignee history

1984–2009Based in Yokohama, JP· patent location history

1989–2009Patents assigned to NIKON CORP (100)· patent assignee history

1995–1998Patents assigned to SONY CORP (4)· patent assignee history

1995–2000Based in Kanagawa, JP· patent location history

1999Based in Yokohama-shi, JP· patent location history

2021Patents assigned to DENSO CORP (1)· patent assignee history

2021Based in Hamamatsu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIKON CORP	100	1989–2009
NIPPON KOGAKU KK	8	1984–1998
SONY CORP	4	1995–1998
DENSO CORP	1	2021
HONDA MOTOR CO LTD	1	1978

Locations

Location	Patents	Span
Yokohama, JP	101	1984–2009
Kanagawa, JP	6	1995–2000
Hamamatsu, JP	1	2021
Yokohama-shi, JP	1	1999
Saitama, JP	1	1978