Inventor · disambiguated record
Seiichi Yasukawa
Also filed as: YASUKAWA SEIICHI
42 granted patents·399 citations·filing 1982–1998
98Inventor score
Top patents by PatentIndex Score
42 records- 0198US5305048AA photo taking apparatus capable of making a photograph with flash by a flash deviceNIKON CORP·Filed 1992·Granted Apr 19, 1994·91 cites·4 claims
- 0285US5164759ATtl automatic flash control cameraNIKON CORP·Filed 1991·Granted Nov 17, 1992·27 cites·4 claims
- 0379US5499075APhotometric apparatus for a cameraNIKON CORP·Filed 1995·Granted Mar 12, 1996·13 cites·7 claims
- 0479US4482235AAutomatic focusing device for cameraNIPPON KOGAKU KK·Filed 1982·Granted Nov 13, 1984·14 cites·8 claims
- 0577US5168300ATTL automatic flash control deviceNIKON CORP·Filed 1991·Granted Dec 1, 1992·18 cites·3 claims
- 0676US5189466AInformation setting apparatus in a cameraNIKON CORP·Filed 1991·Granted Feb 23, 1993·17 cites·5 claims
- 0775US6085040AApparatus and method for controlling an amount of light emitted by an electronic flash deviceNIKON CORP·Filed 1998·Granted Jul 4, 2000·13 cites·30 claims
- 0871US5570148AFlash control apparatusNIKON CORP·Filed 1994·Granted Oct 29, 1996·14 cites·10 claims
- 0969US5227836ATTL automatic light controlling camera systemNIKON CORP·Filed 1992·Granted Jul 13, 1993·12 cites·9 claims
- 1069US5221941ATtl multiple flash control deviceNIKON CORP·Filed 1991·Granted Jun 22, 1993·13 cites·1 claims
- 1167US5481326ACamera data communication deviceNIKON CORP·Filed 1995·Granted Jan 2, 1996·9 cites·47 claims
- 1262US4942413ACameraNIKON CORP·Filed 1989·Granted Jul 17, 1990·6 cites·6 claims
- 1361US5231448APhotometric apparatus for a cameraNIKON CORP·Filed 1990·Granted Jul 27, 1993·7 cites·11 claims
- 1457US5049917ACamera systemNIKON CORP·Filed 1989·Granted Sep 17, 1991·7 cites·5 claims
- 1554US5422702ATTL auto flash control deviceNIKON CORP·Filed 1994·Granted Jun 6, 1995·7 cites·10 claims
- 1654US4918481ACamera capable of bracketing exposureNIKON CORP·Filed 1989·Granted Apr 17, 1990·6 cites·13 claims
- 1751US5652929ACamera having a through-the-lens automatic light adjustment control deviceNIKON CORP·Filed 1995·Granted Jul 29, 1997·4 cites·14 claims
- 1851US5450162APhoto-taking apparatus capable of making a photograph with flash by a flash deviceNIKON CORP·Filed 1994·Granted Sep 12, 1995·4 cites·6 claims
- 1948US4750013AAutomatic focus adjustment cameraNIPPON KOGAKU KK·Filed 1987·Granted Jun 7, 1988·12 cites·6 claims
- 2044US5614982AAutomatic focus adjustment device for adjusting a focus state of a camera lens regardless of subject stabilityNIKON CORP·Filed 1995·Granted Mar 25, 1997·11 cites·13 claims
- 2143US5692118AAutofocus control device having moving body tracking controlNIKON CORP·Filed 1995·Granted Nov 25, 1997·10 cites·16 claims
- 2243US5678078ACamera capable of communicating with an external device via communication contact points arranged in a cartridge compartmentNIKON CORP·Filed 1995·Granted Oct 14, 1997·2 cites·19 claims
- 2343US5640626ABattery voltage detection device using pulse width modulation controlNIKON CORP·Filed 1995·Granted Jun 17, 1997·13 cites·15 claims
- 2442US5619300AAutofocus adjustment device and methodNIKON CORP·Filed 1995·Granted Apr 8, 1997·9 cites·34 claims
- 2541US5899589ACameraNIKON CORP·Filed 1997·Granted May 4, 1999·2 cites·7 claims
- 2641US5749004AOption setting device and method of operating same for use with a cameraNIKON CORP·Filed 1997·Granted May 5, 1998·2 cites·15 claims
- 2741US5604561AFocus state detection deviceNIKON CORP·Filed 1995·Granted Feb 18, 1997·9 cites·19 claims
- 2840US5694625ACamera provided with an automatic focus adjusting apparatusNIKON CORP·Filed 1995·Granted Dec 2, 1997·8 cites·13 claims
- 2938US5652925AImage sensor system and auto-focus detection deviceNIKON CORP·Filed 1995·Granted Jul 29, 1997·8 cites·15 claims
- 3038US5572281APhoto-taking apparatus capable of making a photograph with flash by a flash deviceNIKON CORP·Filed 1995·Granted Nov 5, 1996·1 cites·3 claims
- 3137US5687277AMotor drive control device which uses pulse width modulation to control the speed of a motorNIKON CORP·Filed 1995·Granted Nov 11, 1997·7 cites·10 claims
- 3237US5177526ASystem for inputting information into cameraNIKON CORP·Filed 1990·Granted Jan 5, 1993·2 cites·9 claims
- 3336US5745704AData communication control deviceNIKON CORP·Filed 1995·Granted Apr 28, 1998·8 cites·12 claims
- 3434US5530515AControl system for an apparatus using a microcomputerNIKON CORP·Filed 1994·Granted Jun 25, 1996·3 cites·9 claims
- 3534US5084720ACamera accessory having data communication and printing capabilityNIKON CORP·Filed 1991·Granted Jan 28, 1992·1 cites·4 claims
- 3633US5797048AAutomatic focusing device which inhibits tracking drive control with a zoom lens having focus shiftNIKON CORP·Filed 1997·Granted Aug 18, 1998·3 cites·16 claims
- 3732US5353093AControl system for an apparatus using a microcomputerNIKON CORP·Filed 1993·Granted Oct 4, 1994·2 cites·4 claims
- 3831US5717961AAutomatic focus adjustment device capable of accurately driving a photographic lens to an end point of movementNIKON CORP·Filed 1995·Granted Feb 10, 1998·2 cites·11 claims
- 3931US5291238APhotometering circuitNIKON CORP·Filed 1992·Granted Mar 1, 1994·2 cites·4 claims
- 4031US5001503ACameraNIKON CORP·Filed 1990·Granted Mar 19, 1991·0 cites·3 claims
- 4130US5276320APhotometering deviceNIKON CORP·Filed 1992·Granted Jan 4, 1994·0 cites·3 claims
- 4230US5079573ACameraNIKON CORP·Filed 1991·Granted Jan 7, 1992·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →