Inventor · disambiguated record
Yutaka Ohsawa
Also filed as: MASAHIRO KAWASAKI · OHSAWA YUTAKA
29 granted patents·217 citations·filing 1987–2013
96Inventor score
Files withASAHI OPTICAL CO LTD20HOYA CORP5PENTAX CORP2KAKIUCHI SHINICHI1PENTAX RICOH IMAGING CO LTD1
Top patents by PatentIndex Score
29 records- 0193US7542092B2Digital camera with a battery checking deviceHOYA CORP·Filed 2005·Granted Jun 2, 2009·34 cites·16 claims
- 0287US5621495ARepresentation of depth of field in cameraASAHI OPTICAL CO LTD·Filed 1995·Granted Apr 15, 1997·21 cites·30 claims
- 0385US4806748APhoto-electric conversion circuitASAHI OPTICAL CO LTD·Filed 1987·Granted Feb 21, 1989·32 cites·10 claims
- 0483US5019852ARepresentation of depth of field in cameraASAHI OPTICAL CO LTD·Filed 1989·Granted May 28, 1991·15 cites·35 claims
- 0581US7970274B2Diaphragm control apparatus of interchangeable lens cameraHOYA CORP·Filed 2010·Granted Jun 28, 2011·5 cites·9 claims
- 0676US4999661ACamera having selective functionsASAHI OPTICAL CO LTD·Filed 1989·Granted Mar 12, 1991·16 cites·22 claims
- 0772US6351605B1Remote control, auto-focus camera systemASAHI OPTICAL CO LTD·Filed 2000·Granted Feb 26, 2002·11 cites·4 claims
- 0867US7974530B2Diaphragm control apparatus of interchangeable lens cameraHOYA CORP·Filed 2010·Granted Jul 5, 2011·2 cites·15 claims
- 0967US7970273B2Diaphragm control apparatus of interchangeable lens cameraHOYA CORP·Filed 2010·Granted Jun 28, 2011·2 cites·7 claims
- 1064US9152011B2Diaphragm control apparatus of interchangeable lens cameraPENTAX RICOH IMAGING CO LTD·Filed 2013·Granted Oct 6, 2015·1 cites·13 claims
- 1161US5510875ARepresentation of depth of field in cameraASAHI OPTICAL CO LTD·Filed 1993·Granted Apr 23, 1996·7 cites·38 claims
- 1260US4789777APhotelectric amplifier having plural actuable feedback pathsASAHI OPTICAL CO LTD·Filed 1987·Granted Dec 6, 1988·17 cites·5 claims
- 1357US8159601B2Sequential shooting controllerKAKIUCHI SHINICHI·Filed 2009·Granted Apr 17, 2012·1 cites·12 claims
- 1450US6157785ARoll-film cameraASAHI OPTICAL CO LTD·Filed 1999·Granted Dec 5, 2000·4 cites·16 claims
- 1549US4872069AElectric power supply control device for cameraASAHI OPTICAL CO LTD·Filed 1988·Granted Oct 3, 1989·4 cites·11 claims
- 1647US6122451ASetting apparatus for cameraASAHI OPTICAL CO LTD·Filed 1998·Granted Sep 19, 2000·3 cites·31 claims
- 1747US5034769AInterchangeable camera and interchangeable flash deviceASAHI OPTICAL CO LTD·Filed 1990·Granted Jul 23, 1991·12 cites·37 claims
- 1847US4933704AElectric power supply control device for cameraASAHI OPTICAL CO LTD·Filed 1989·Granted Jun 12, 1990·4 cites·4 claims
- 1945US5025276AControl apparatus of single-lens reflex cameraASAHI OPTICAL CO LTD·Filed 1990·Granted Jun 18, 1991·5 cites·23 claims
- 2043US7313323B2Camera system with a photometering device and an external operating devicePENTAX CORP·Filed 2004·Granted Dec 25, 2007·0 cites·20 claims
- 2142US7555212B2Battery check deviceHOYA CORP·Filed 2006·Granted Jun 30, 2009·0 cites·3 claims
- 2242US5467200AData communication method between circuitsASAHI OPTICAL CO LTD·Filed 1993·Granted Nov 14, 1995·7 cites·15 claims
- 2342US4831400AStop-down signal adjusting circuit in automatic aperture control cameraASAHI OPTICAL CO LTD·Filed 1987·Granted May 16, 1989·3 cites·22 claims
- 2440US4737807AFilm rewinding device for cameraASAHI OPTICAL CO LTD·Filed 1987·Granted Apr 12, 1988·3 cites·7 claims
- 2539US7035536B2Flash control mechanismPENTAX CORP·Filed 2004·Granted Apr 25, 2006·0 cites·12 claims
- 2635US5365350AData communication method between circuitsASAHI OPTICAL CO LTD·Filed 1993·Granted Nov 15, 1994·4 cites·27 claims
- 2733US6167205AData-imprinting cameraASAHI OPTICAL CO LTD·Filed 1999·Granted Dec 26, 2000·0 cites·12 claims
- 2833US5283663AData communication method between circuitsASAHI OPTICAL CO LTD·Filed 1990·Granted Feb 1, 1994·3 cites·18 claims
- 2932US5887210ACamera having motor driven mechanismASAHI OPTICAL CO LTD·Filed 1994·Granted Mar 23, 1999·1 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →