Inventor · disambiguated record
Isao Doi
Also filed as: DOI ISAO
53 granted patents·2 pending applications·563 citations·filing 1984–2015
98Inventor score
Files withMINOLTA CAMERA KK31MINOLTA CO LTD14HITACHI AUTOMOTIVE SYSTEMS LTD4DOI ISAO1KONICA MINOLTA HOLDINGS INC1
Top patents by PatentIndex Score
55 records- 0193US4882256APhotosensitive member having an overcoat layer comprising amorphous carbonMINOLTA CAMERA KK·Filed 1987·Granted Nov 21, 1989·43 cites·22 claims
- 0289USD298318SStand and handset for telephone answering machineSANYO ELECTRIC CO·Filed 1985·Granted Nov 1, 1988·30 cites·1 claims
- 0388US5242776AOrganic photosensitive member having fine irregularities on its surfaceMINOLTA CAMERA KK·Filed 1991·Granted Sep 7, 1993·36 cites·11 claims
- 0487US4576127AValve timing control device for an internal combustion engineNISSAN MOTOR·Filed 1985·Granted Mar 18, 1986·54 cites·7 claims
- 0586US4965156APhotosensitive member having an overcoat layer and process for manufacturing the sameMINOLTA CAMERA KK·Filed 1989·Granted Oct 23, 1990·28 cites·10 claims
- 0680US5308727APhotosensitive member excellent in antioxidationMINOLTA CAMERA KK·Filed 1991·Granted May 3, 1994·21 cites·12 claims
- 0777US5652649ACharging device and image forming apparatusMINOLTA CO LTD·Filed 1995·Granted Jul 29, 1997·27 cites·17 claims
- 0874US4659639APhotosensitive member with an amorphous silicon-containing insulating layerMINOLTA CAMERA KK·Filed 1984·Granted Apr 21, 1987·28 cites·12 claims
- 0973US4971880ADeveloper containing halogenated amorphous carbon particles prepared by plasma-polymerizationMINOLTA CAMERA KK·Filed 1989·Granted Nov 20, 1990·16 cites·24 claims
- 1072US5242773APhotosensitive member having fine cracks in surface protective layerMINOLTA CAMERA KK·Filed 1991·Granted Sep 7, 1993·18 cites·7 claims
- 1171US5082756APhotosensitive member for retaining electrostatic latent imagesMINOLTA CAMERA KK·Filed 1990·Granted Jan 21, 1992·18 cites·30 claims
- 1269US7665829B2Liquid solution ejecting apparatusKONICA MINOLTA HOLDINGS INC·Filed 2005·Granted Feb 23, 2010·3 cites·11 claims
- 1369US5096793APhotosensitive member excellent in antioxidationMINOLTA CAMERA KK·Filed 1990·Granted Mar 17, 1992·14 cites·12 claims
- 1464US5138381AImage forming apparatus equipped with separating pawl with specified surface roughnessMINOLTA CAMERA KK·Filed 1990·Granted Aug 11, 1992·14 cites·6 claims
- 1563US4847653ATriboelectrically charging memberMINOLTA CAMERA KK·Filed 1988·Granted Jul 11, 1989·13 cites·8 claims
- 1658US8162439B2Method for manufacturing nozzle plate for liquid ejection head, nozzle plate for liquid ejection head and liquid ejection headDOI ISAO·Filed 2008·Granted Apr 24, 2012·2 cites·4 claims
- 1758US5139906APhotosensitive medium with a protective layer of amorphous hydrocarbon having an absorption coefficient greater than 10,000 cm-1MINOLTA CAMERA KK·Filed 1990·Granted Aug 18, 1992·11 cites·28 claims
- 1858US4801515APhotosensitive member having an overcoat layerMINOLTA CAMERA KK·Filed 1987·Granted Jan 31, 1989·10 cites·8 claims
- 1958US4683184AElectrophotosensitive member having alternating amorphous semiconductor layersMINOLTA CAMERA KK·Filed 1985·Granted Jul 28, 1987·10 cites·13 claims
- 2057US4683185AElectrophotosensitive member having a depletion layerMINOLTA CAMERA KK·Filed 1985·Granted Jul 28, 1987·10 cites·11 claims
- 2156US8881399B2Method of manufacturing a nozzle plate for a liquid ejection headYANATA ATSURO·Filed 2007·Granted Nov 11, 2014·2 cites·7 claims
- 2256US5125644ASeparating device for sheet-like member including separating pawl coated with amorphous carbon layerMINOLTA CAMERA KK·Filed 1990·Granted Jun 30, 1992·10 cites·31 claims
- 2355US5557375AContact type charging device and image forming apparatus having the sameMINOLTA CO LTD·Filed 1995·Granted Sep 17, 1996·12 cites·19 claims
- 2455US4994337APhotosensitive member having an overcoat layerMINOLTA CAMERA KK·Filed 1988·Granted Feb 19, 1991·9 cites·11 claims
- 2554US4886724APhotosensitive member having an overcoat layer and process for manufacturing the sameMINOLTA CAMERA KK·Filed 1988·Granted Dec 12, 1989·9 cites·11 claims
- 2654US4686164AElectrophotosensitive member with multiple layers of amorphous siliconMINOLTA CAMERA KK·Filed 1985·Granted Aug 11, 1987·9 cites·4 claims
- 2752US5396317AMagnetic particle-containing member for use in copying machineMINOLTA CAMERA KK·Filed 1993·Granted Mar 7, 1995·9 cites·18 claims
- 2851US6347894B1Light shutter deviceMINOLTA CO LTD·Filed 2000·Granted Feb 19, 2002·3 cites·14 claims
- 2951US5330873AProduction method of photosensitive member by eliminating outermost surface portion of photosensitive layerMINOLTA CAMERA KK·Filed 1993·Granted Jul 19, 1994·8 cites·13 claims
- 3050US5930565AImage forming apparatusMINOLTA CO LTD·Filed 1998·Granted Jul 27, 1999·9 cites·22 claims
- 3150US5881343ACharging method and charging deviceMINOLTA CO LTD·Filed 1997·Granted Mar 9, 1999·15 cites·29 claims
- 3249US9683465B2Valve-timing control apparatus for internal combustion engineHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Jun 20, 2017·0 cites·16 claims
- 3349US9115611B2Variable valve operating apparatus for internal combustion engineHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Aug 25, 2015·0 cites·15 claims
- 3448US6441941B2Light shutter deviceMINOLTA CO LTD·Filed 2000·Granted Aug 27, 2002·2 cites·19 claims
- 3548US5572294AContact charger and image forming apparatus provided with sameMINOLTA CO LTD·Filed 1994·Granted Nov 5, 1996·7 cites·27 claims
- 3646US4891292APhotosensitive member having an amorphous carbon overcoat layerMINOLTA CAMERA KK·Filed 1988·Granted Jan 2, 1990·6 cites·8 claims
- 3744US6661555B2Light shutter deviceMINOLTA CO LTD·Filed 2002·Granted Dec 9, 2003·1 cites·20 claims
- 3842US6124965AOptical element and light shutter device using the sameMINOLTA CO LTD·Filed 1999·Granted Sep 26, 2000·10 cites·14 claims
- 3942US4698287APhotosensitive member having an amorphous silicon layerMINOLTA CAMERA KK·Filed 1985·Granted Oct 6, 1987·5 cites·6 claims
- 4041US5536610APhotosensitive member having surface protective layer with specified optical propertiesMINOLTA CAMERA KK·Filed 1994·Granted Jul 16, 1996·6 cites·27 claims
- 4140US4810606APhotosensitive member comprising charge generating layer and charge transporting layerMINOLTA CAMERA KK·Filed 1987·Granted Mar 7, 1989·4 cites·6 claims
- 4239US9874116B2Valve-timing control device for internal combustion engineHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Jan 23, 2018·0 cites·13 claims
- 4339US5862443AElectrostatic recording apparatus having a floating electrode on a photoelectric transfer memberMINOLTA CO LTD·Filed 1997·Granted Jan 19, 1999·5 cites·25 claims
- 4438US5774169AImage forming apparatusMINOLTA CO LTD·Filed 1996·Granted Jun 30, 1998·5 cites·9 claims
- 4537US5557372AContact charger and image forming apparatus provided with sameMINOLTA CO LTD·Filed 1994·Granted Sep 17, 1996·3 cites·21 claims
- 4636US2018328239A1Internal-combustion engine valve timing control deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Application pending·0 cites
- 4733US5860046ACharging method and charging deviceMINOLTA CO LTD·Filed 1997·Granted Jan 12, 1999·2 cites·17 claims
- 4833US5790925AElectrophotographic image forming apparatus with low ozone generationMINOLTA CO LTD·Filed 1997·Granted Aug 4, 1998·2 cites·15 claims
- 4933US4851313APhotosensitive member comprising charge generating layer and charge transporting layer and process for preparing sameMINOLTA CAMERA KK·Filed 1987·Granted Jul 25, 1989·2 cites·13 claims
- 5031US5198317AOrganic photosensitive member comprising a charge transport layer with a binder resin and a solventMINOLTA CAMERA KK·Filed 1991·Granted Mar 30, 1993·1 cites·7 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →