Inventor · disambiguated record
Tateki Oka
Also filed as: OKA TATEKI · TANAKA SUSUMU
59 granted patents·843 citations·filing 1977–2000
99Inventor score
Top patents by PatentIndex Score
59 records- 0195US5012285ADeveloping apparatus including a partitioning arrangement for partitioning the toner accommodating tankMINOLTA CAMERA KK·Filed 1988·Granted Apr 30, 1991·55 cites·16 claims
- 0291US4562130AMethod of forming composite imagesMINOLTA CAMERA KK·Filed 1983·Granted Dec 31, 1985·34 cites·17 claims
- 0390US4338880AMagnetic brush development apparatus for use in electrophotographic copying machineMINOLTA CAMERA KK·Filed 1979·Granted Jul 13, 1982·30 cites·15 claims
- 0489US4627716AToner handling apparatus for electro-photographic copying machinesMINOLTA CAMERA KK·Filed 1984·Granted Dec 9, 1986·30 cites·19 claims
- 0589US4331757ADry process developing method and device employed thereforeMINOLTA CAMERA KK·Filed 1977·Granted May 25, 1982·27 cites·3 claims
- 0686US5303016AImage fixing device for image forming apparatus including means for locally heating inner wall of fixing means at location corresponding to nipMINOLTA CAMERA KK·Filed 1992·Granted Apr 12, 1994·39 cites·52 claims
- 0786US4506804AVolume detecting deviceMINOLTA CAMERA KK·Filed 1983·Granted Mar 26, 1985·38 cites·20 claims
- 0884US4659211ACopying apparatusMINOLTA CAMERA KK·Filed 1985·Granted Apr 21, 1987·27 cites·12 claims
- 0984US4572102AMethod of controlling replenishment of tonersMINOLTA CAMERA KK·Filed 1984·Granted Feb 25, 1986·25 cites·8 claims
- 1081US4436413AMagnetic brush developing apparatusMINOLTA CAMERA KK·Filed 1982·Granted Mar 13, 1984·22 cites·7 claims
- 1179US4284702AElectrographic developing methodMINOLTA CAMERA KK·Filed 1979·Granted Aug 18, 1981·18 cites·13 claims
- 1279US4235194ADry process developing apparatus for use in electrophotographic copying machineMINOLTA CAMERA KK·Filed 1979·Granted Nov 25, 1980·33 cites·4 claims
- 1377US4745437ACopier machinesMINOLTA CAMERA KK·Filed 1987·Granted May 17, 1988·20 cites·15 claims
- 1476US5003917ADeveloping apparatus with image quality controlMINOLTA CAMERA KK·Filed 1989·Granted Apr 2, 1991·19 cites·15 claims
- 1575US4514480AMethod of controlling toner concentration for electrophotographic copying apparatusMINOLTA CAMERA KK·Filed 1983·Granted Apr 30, 1985·17 cites·8 claims
- 1675US4345014AMagnetic brush developing method for use in electrography employing dual-component developing materialMINOLTA CAMERA KK·Filed 1980·Granted Aug 17, 1982·18 cites·3 claims
- 1772US4301228AElectrographic developing material and developing method employing said developing materialMINOLTA CAMERA KK·Filed 1980·Granted Nov 17, 1981·21 cites·7 claims
- 1869US4376578AElectrographic copying machine of powder image transfer typeMINOLTA CAMERA KK·Filed 1981·Granted Mar 15, 1983·15 cites·5 claims
- 1968US5243390ADevice for conveying developer in a developing deviceMINOLTA CAMERA KK·Filed 1992·Granted Sep 7, 1993·16 cites·16 claims
- 2067US4353648ACopy paper separating method for use in electrophotographic copying apparatusMINOLTA CAMERA KK·Filed 1980·Granted Oct 12, 1982·13 cites·6 claims
- 2164US5122843AImage forming apparatus having developing devices which use different size toner particlesMINOLTA CAMERA KK·Filed 1991·Granted Jun 16, 1992·15 cites·13 claims
- 2263US4785331AElectrophotographic copying method and apparatusMINOLTA CAMERA KK·Filed 1987·Granted Nov 15, 1988·13 cites·18 claims
- 2363US4434221AToner concentration detection by measuring current created by transfer of carrier component to non-image areas of image support surfaceMINOLTA CAMERA KK·Filed 1982·Granted Feb 28, 1984·12 cites·6 claims
- 2463US4396275AToner image transfer type electrographic copying machineMINOLTA CAMERA KK·Filed 1981·Granted Aug 2, 1983·12 cites·10 claims
- 2562US5283615AImage forming apparatus having a plurality of developing devicesMINOLTA CAMERA KK·Filed 1990·Granted Feb 1, 1994·14 cites·34 claims
- 2662US4766458ADeveloping apparatus for use in image-forming system and developing process employing said developing apparatusMINOLTA CAMERA KK·Filed 1986·Granted Aug 23, 1988·12 cites·14 claims
- 2761US4578337ADry process for developing electrostatic latent images with a developer comprising two kinds of magnetic carriers having different physical structureMINOLTA CAMERA KK·Filed 1984·Granted Mar 25, 1986·10 cites·15 claims
- 2861US4334497AMagnetic brush developing apparatusMINOLTA CAMERA KK·Filed 1980·Granted Jun 15, 1982·11 cites·7 claims
- 2960US5781827ADeveloping device having a bias-controlled toner discharging memberMINOLTA CO LTD·Filed 1996·Granted Jul 14, 1998·14 cites·30 claims
- 3060US5063127AMethod for forming multi-color imagesMINOLTA CAMERA KK·Filed 1989·Granted Nov 5, 1991·11 cites·17 claims
- 3160US4954843AElectrophotographic image forming apparatusMINOLTA CAMERA KK·Filed 1989·Granted Sep 4, 1990·12 cites·30 claims
- 3259US6266508B1Developing apparatus including an AC voltage applying deviceMINOLTA CO LTD·Filed 2000·Granted Jul 24, 2001·7 cites·27 claims
- 3358US4269920ADry process developing material for electrophotographyMINOLTA CAMERA KK·Filed 1978·Granted May 26, 1981·8 cites·5 claims
- 3458US4254203ADry process developing method employing magnetic tonerMINOLTA CAMERA KK·Filed 1978·Granted Mar 3, 1981·14 cites·23 claims
- 3555US4928145ADeveloping apparatus having a bucket roller with movable bucketsMINOLTA CAMERA KK·Filed 1988·Granted May 22, 1990·9 cites·6 claims
- 3654US5287146AContact type charging device having voltage limiterMINOLTA CAMERA KK·Filed 1992·Granted Feb 15, 1994·9 cites·16 claims
- 3754US5287152AElectric charge supplying device and system employing the sameMINOLTA CAMERA KK·Filed 1992·Granted Feb 15, 1994·9 cites·34 claims
- 3854US4912513ADeveloping apparatus with variable developing bias voltageMINOLTA CAMERA KK·Filed 1988·Granted Mar 27, 1990·9 cites·8 claims
- 3953US5138385ADeveloping device with electrically floating developing rollerMINOLTA CAMERA KK·Filed 1991·Granted Aug 11, 1992·9 cites·12 claims
- 4052US4392735AMagnetic brush developing apparatusMINOLTA CAMERA KK·Filed 1981·Granted Jul 12, 1983·8 cites·3 claims
- 4151US5262828ADeveloping bias power unit for use in an image forming apparatusMINOLTA CAMERA KK·Filed 1992·Granted Nov 16, 1993·8 cites·19 claims
- 4251US4794062AMethod for the formation of outline images corresponding to the peripheral outlines of document's imagesMINOLTA CAMERA KK·Filed 1987·Granted Dec 27, 1988·8 cites·8 claims
- 4351US4608327AMethod of forming composite imagesMINOLTA CAMERA KK·Filed 1984·Granted Aug 26, 1986·7 cites·10 claims
- 4448US5493324AImage forming apparatusMINOLTA CAMERA KK·Filed 1993·Granted Feb 20, 1996·10 cites·8 claims
- 4547US5255062AImage forming apparatus having a removal means for separating developersMINOLTA CAMERA KK·Filed 1992·Granted Oct 19, 1993·7 cites·16 claims
- 4647US5047805ADeveloping device having a space for receiving and increasing pressure of toner received thereinMINOLTA CAMERA KK·Filed 1990·Granted Sep 10, 1991·7 cites·16 claims
- 4746US4485760ADry process developing method and device employed thereforMINOLTA CAMERA KK·Filed 1982·Granted Dec 4, 1984·6 cites·3 claims
- 4845US4452173AMagnetic brush developing apparatusMINOLTA CAMERA KK·Filed 1982·Granted Jun 5, 1984·9 cites·5 claims
- 4944US5065233AColor image forming apparatusMINOLTA CAMERA KK·Filed 1989·Granted Nov 12, 1991·7 cites·31 claims
- 5044US4640883AMethod of forming composite or dichromatic imagesMINOLTA CAMERA KK·Filed 1984·Granted Feb 3, 1987·5 cites·7 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Tateki Oka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →