Inventor · disambiguated record
Izumi Osawa
Also filed as: OSAWA IZUMI
73 granted patents·988 citations·filing 1984–1999
99Inventor score
Top patents by PatentIndex Score
73 records- 0197US5245386AContact charging device having a brush restricting memberMINOLTA CAMERA KK·Filed 1992·Granted Sep 14, 1993·77 cites·25 claims
- 0293US4882256APhotosensitive member having an overcoat layer comprising amorphous carbonMINOLTA CAMERA KK·Filed 1987·Granted Nov 21, 1989·43 cites·22 claims
- 0388US5242776AOrganic photosensitive member having fine irregularities on its surfaceMINOLTA CAMERA KK·Filed 1991·Granted Sep 7, 1993·36 cites·11 claims
- 0487US4842989AResist layer and process for forming resist pattern thereonMINOLTA CAMERA KK·Filed 1987·Granted Jun 27, 1989·47 cites·6 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
- 0684US5000831AMethod of production of amorphous hydrogenated carbon layerMINOLTA CAMERA KK·Filed 1988·Granted Mar 19, 1991·46 cites·12 claims
- 0783US4743522APhotosensitive member with hydrogen-containing carbon layerMINOLTA CAMERA KK·Filed 1986·Granted May 10, 1988·25 cites·7 claims
- 0881US5504560APhotosensitive member-protective shutterMINOLTA CO LTD·Filed 1994·Granted Apr 2, 1996·28 cites·30 claims
- 0980US5371578AImage forming apparatus including means for removing counter charged toner from the charging meansMINOLTA CAMERA KK·Filed 1993·Granted Dec 6, 1994·25 cites·10 claims
- 1080US5308727APhotosensitive member excellent in antioxidationMINOLTA CAMERA KK·Filed 1991·Granted May 3, 1994·21 cites·12 claims
- 1179US5504559AMethod for image formationMINOLTA CO LTD·Filed 1994·Granted Apr 2, 1996·24 cites·43 claims
- 1276US6287374B1Pigment and process for producing the same, water base ink and process for producing the sameYANAGIDA SHOZO·Filed 1999·Granted Sep 11, 2001·38 cites·17 claims
- 1375US4939054APhotosensitive member composed of amorphous carbon charge transporting layer and charge generating layerMINOLTA CAMERA KK·Filed 1989·Granted Jul 3, 1990·18 cites·7 claims
- 1474US5568231ACharging device for charging the surface of a photosensitive member in an electrophotographic image forming deviceMINOLTA CAMERA KK·Filed 1993·Granted Oct 22, 1996·19 cites·19 claims
- 1574US4659639APhotosensitive member with an amorphous silicon-containing insulating layerMINOLTA CAMERA KK·Filed 1984·Granted Apr 21, 1987·28 cites·12 claims
- 1673US5225878AImage forming apparatusMINOLTA CAMERA KK·Filed 1992·Granted Jul 6, 1993·19 cites·7 claims
- 1773US4971880ADeveloper containing halogenated amorphous carbon particles prepared by plasma-polymerizationMINOLTA CAMERA KK·Filed 1989·Granted Nov 20, 1990·16 cites·24 claims
- 1872US5289234AImage forming apparatus with charge brushMINOLTA CAMERA KK·Filed 1993·Granted Feb 22, 1994·18 cites·22 claims
- 1972US5242773APhotosensitive member having fine cracks in surface protective layerMINOLTA CAMERA KK·Filed 1991·Granted Sep 7, 1993·18 cites·7 claims
- 2072US5241342AImage forming apparatus having a charging member and means for protecting the image bearing surface charged by the charging memberMINOLTA CAMERA KK·Filed 1992·Granted Aug 31, 1993·19 cites·10 claims
- 2170US5043769ACleaning deviceMINOLTA CAMERA KK·Filed 1989·Granted Aug 27, 1991·15 cites·11 claims
- 2269US5096793APhotosensitive member excellent in antioxidationMINOLTA CAMERA KK·Filed 1990·Granted Mar 17, 1992·14 cites·12 claims
- 2367US4741982APhotosensitive member having undercoat layer of amorphous carbonMINOLTA CAMERA KK·Filed 1986·Granted May 3, 1988·14 cites·16 claims
- 2466US5192974AContract chargerMINOLTA CAMERA KK·Filed 1992·Granted Mar 9, 1993·15 cites·13 claims
- 2565US6145966AInk jet recording headMINOLTA CO LTD·Filed 1997·Granted Nov 14, 2000·22 cites·18 claims
- 2665US4749636APhotosensitive member with hydrogen-containing carbon layerMINOLTA CAMERA KK·Filed 1986·Granted Jun 7, 1988·13 cites·12 claims
- 2764US5138381AImage forming apparatus equipped with separating pawl with specified surface roughnessMINOLTA CAMERA KK·Filed 1990·Granted Aug 11, 1992·14 cites·6 claims
- 2863US4939056APhotosensitive memberMINOLTA CAMERA KK·Filed 1988·Granted Jul 3, 1990·12 cites·30 claims
- 2963US4913994APhotosensitive member composed of charge transporting layer and charge generating layerMINOLTA CAMERA KK·Filed 1989·Granted Apr 3, 1990·12 cites·8 claims
- 3062US5552865ACharging device and method for charging a charge-receiving member by a charging member by discharge therebetween based on difference in electric potential between the charging member and the charge-receiving memberMINOLTA CAMERA KK·Filed 1994·Granted Sep 3, 1996·13 cites·40 claims
- 3162US5278614AContact charger and image forming apparatus incorporating the contact chargerMINOLTA CAMERA KK·Filed 1993·Granted Jan 11, 1994·13 cites·17 claims
- 3260US4933247AOrganic photosensitive member with non-directive upheave patterns on the surface of protective layer made of amorphous carbonMINOLTA CAMERA KK·Filed 1988·Granted Jun 12, 1990·11 cites·8 claims
- 3358US5139906APhotosensitive 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
- 3458US4801515APhotosensitive member having an overcoat layerMINOLTA CAMERA KK·Filed 1987·Granted Jan 31, 1989·10 cites·8 claims
- 3558US4683184AElectrophotosensitive member having alternating amorphous semiconductor layersMINOLTA CAMERA KK·Filed 1985·Granted Jul 28, 1987·10 cites·13 claims
- 3657US5328790APhotoreceptor for use in contact charging method and image forming apparatus employing said photoreceptorMINOLTA CAMERA KK·Filed 1992·Granted Jul 12, 1994·10 cites·7 claims
- 3757US4683185AElectrophotosensitive member having a depletion layerMINOLTA CAMERA KK·Filed 1985·Granted Jul 28, 1987·10 cites·11 claims
- 3856US5125644ASeparating 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
- 3955US4994337APhotosensitive member having an overcoat layerMINOLTA CAMERA KK·Filed 1988·Granted Feb 19, 1991·9 cites·11 claims
- 4055US4906544APhotosensitive member of plasma polymerized amorphous carbon charge transporting layer and charge generating layerMINOLTA CAMERA KK·Filed 1989·Granted Mar 6, 1990·9 cites·11 claims
- 4154US4886724APhotosensitive member having an overcoat layer and process for manufacturing the sameMINOLTA CAMERA KK·Filed 1988·Granted Dec 12, 1989·9 cites·11 claims
- 4254US4686164AElectrophotosensitive member with multiple layers of amorphous siliconMINOLTA CAMERA KK·Filed 1985·Granted Aug 11, 1987·9 cites·4 claims
- 4353US4950571APhotosensitive member composed of charge transporting layer and charge generating layerMINOLTA CAMERA KK·Filed 1989·Granted Aug 21, 1990·8 cites·7 claims
- 4452US5396317AMagnetic particle-containing member for use in copying machineMINOLTA CAMERA KK·Filed 1993·Granted Mar 7, 1995·9 cites·18 claims
- 4551US5330873AProduction method of photosensitive member by eliminating outermost surface portion of photosensitive layerMINOLTA CAMERA KK·Filed 1993·Granted Jul 19, 1994·8 cites·13 claims
- 4651US4797338APhotosensitive member comprising charge generating layer and charge transporting layerMINOLTA CAMERA KK·Filed 1987·Granted Jan 10, 1989·8 cites·4 claims
- 4751US4738912APhotosensitive member having an amorphous carbon transport layerMINOLTA CAMERA KK·Filed 1986·Granted Apr 19, 1988·8 cites·6 claims
- 4848US5572294AContact charger and image forming apparatus provided with sameMINOLTA CO LTD·Filed 1994·Granted Nov 5, 1996·7 cites·27 claims
- 4948US5376425AContact member for controlling an electrostatic state of a chargeable memberMINOLTA CAMERA KK·Filed 1992·Granted Dec 27, 1994·11 cites·10 claims
- 5047US5576807AImage forming apparatus having a contact type charging deviceMINOLTA CO LTD·Filed 1995·Granted Nov 19, 1996·8 cites·6 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →