Inventor · disambiguated record
Yoshiyuki Takematsu
Also filed as: TAKEMATSU YOSHIYUKI
23 granted patents·6 pending applications·230 citations·filing 1978–2012
96Inventor score
Top patents by PatentIndex Score
29 records- 0188US4415247AElectric flash apparatusFUJI KOEKI CORP·Filed 1981·Granted Nov 15, 1983·23 cites·18 claims
- 0285USD263720SElectric flash device for cameraTAKEMATSU YOSHIYUKI·Filed 1979·Granted Apr 6, 1982·22 cites·1 claims
- 0377US6061522AFlash lamp usable both as a main and as a slave and connector therefor to an underwater cameraFiled 1998·Granted May 9, 2000·15 cites·5 claims
- 0476US6704500B2Control of light emission from flash lamp externally attached to digital cameraINON INC·Filed 2002·Granted Mar 9, 2004·13 cites·20 claims
- 0576US6512887B2Flash lamps for underwater photography provided with target light and control methods and devices thereforFiled 2001·Granted Jan 28, 2003·13 cites·32 claims
- 0676US4510419AGrip-type photographic flash discharge deviceFUJI KOEKI CORP·Filed 1983·Granted Apr 9, 1985·12 cites·4 claims
- 0775US4356533AElectric flash deviceFUJI KOEKI CORP·Filed 1980·Granted Oct 26, 1982·14 cites·9 claims
- 0875US4223372AElectric flash deviceFUJI KOEKI CORP·Filed 1978·Granted Sep 16, 1980·12 cites·15 claims
- 0973US4354141AElectric flash device for cameraFUJI KOEKI CORP·Filed 1980·Granted Oct 12, 1982·11 cites·16 claims
- 1069US6154610AHousing and control unit for underwater cameraFiled 1999·Granted Nov 28, 2000·10 cites·6 claims
- 1168US4242616APhotographic flash apparatusFUJI KOEKI CORP·Filed 1978·Granted Dec 30, 1980·21 cites·14 claims
- 1266US4385347APower supplyTAKEMATSU Y·Filed 1980·Granted May 24, 1983·19 cites·23 claims
- 1355US4394079APhotographic flash device operatively responsive to the luminance of an object to be photographed to prevent overexposureFUJI KOEKI CORP·Filed 1981·Granted Jul 19, 1983·5 cites·12 claims
- 1453US6518714B2Flash lamps for underwater photographyINOUE AKIHIDE·Filed 2001·Granted Feb 11, 2003·7 cites·19 claims
- 1553US4379983AElectric flash deviceFUJI KOEKI CORP·Filed 1981·Granted Apr 12, 1983·5 cites·14 claims
- 1653US2012293079A1Light emission control of external flash for digital cameraTAKEMATSU Y·Filed 2012·Application pending·0 cites
- 1752US2012114318A1Light emission control of external flash for digital cameraTAKEMATSU Y·Filed 2012·Application pending·0 cites
- 1851US4509844APhotometric circuit in a photographic flash deviceFUJI KOEKI CORP·Filed 1983·Granted Apr 9, 1985·4 cites·11 claims
- 1950US2007139550A1Method and device for controlling quantity of light from flash lamp externally attached to digital cameraTAKEMATSU YOSHIYUKI·Filed 2007·Application pending·0 cites
- 2048USD273013SElectric flash unitFUJI KOEKO CORP·Filed 1981·Granted Mar 13, 1984·5 cites·1 claims
- 2148US2008166112A1Light Emission Control of External Flash For Digital CameraTAKEMATSU YOSHIYUKI·Filed 2005·Application pending·0 cites
- 2246US2002171753A1Method and device for controlling quantity of light from flash lamp externally attached to digital cameraFiled 2002·Application pending·0 cites
- 2341US4404497APower supplying apparatusFUJI KOEKI CORP·Filed 1980·Granted Sep 13, 1983·6 cites·12 claims
- 2438US2003214593A1Flash system for underwater photography with a digital cameraFiled 2003·Application pending·0 cites
- 2537US4469989AElectric flash apparatusFUJI KOEKI CORP·Filed 1982·Granted Sep 4, 1984·5 cites·16 claims
- 2634US4382211AElectric flash deviceFUJI KOEKI CORP·Filed 1980·Granted May 3, 1983·4 cites·16 claims
- 2733US4486690ATest flash device for flash dischargerFUJI KOEKI CORP·Filed 1984·Granted Dec 4, 1984·3 cites·4 claims
- 2830US4337416AElectric flash apparatusFUJI KOEKI CORP·Filed 1980·Granted Jun 29, 1982·1 cites·25 claims
- 2928US4387976ALight quantity indicating circuit for an electronic flash deviceTAKEMATSU Y·Filed 1981·Granted Jun 14, 1983·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →