Inventor · disambiguated record
Masayasu Anzai
Also filed as: ANZAI MASAYASU
38 granted patents·679 citations·filing 1974–1999
98Inventor score
Top patents by PatentIndex Score
38 records- 0193US4467334ALaser beam printerHITACHI LTD·Filed 1981·Granted Aug 21, 1984·42 cites·8 claims
- 0293US4416533ANonimpact printerHITACHI LTD·Filed 1982·Granted Nov 22, 1983·46 cites·11 claims
- 0392US5600405ABias cleaning system and electrostatic printing apparatus therewith and operating method thereofHITACHI LTD·Filed 1994·Granted Feb 4, 1997·46 cites·25 claims
- 0491US5832350ADeveloping apparatus and color electrophotographic apparatus using the sameHITACHI LTD·Filed 1997·Granted Nov 3, 1998·62 cites·36 claims
- 0589US5923933AElectrophotographic apparatusHITACHI KOKI KK·Filed 1998·Granted Jul 13, 1999·49 cites·14 claims
- 0686US3990793ADeveloping station for electronic color photographing apparatusHITACHI LTD·Filed 1974·Granted Nov 9, 1976·25 cites·6 claims
- 0785US4270487ADeveloper regulating device in developing apparatusHITACHI LTD·Filed 1978·Granted Jun 2, 1981·28 cites·8 claims
- 0882US5453822AOptional side multi-toner image forming apparatus using intermediate transfer memberHITACHI KOKI KK·Filed 1993·Granted Sep 26, 1995·27 cites·9 claims
- 0981US5630201ADevelopment apparatus having a plurality of rolls rotated at particular speedsHITACHI KOKI KK·Filed 1996·Granted May 13, 1997·31 cites·14 claims
- 1081US5481351AElectrophotographic recording apparatus having improved residual toner cleaning functionHITACHI KOKI KK·Filed 1994·Granted Jan 2, 1996·28 cites·6 claims
- 1179US4926248AScanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixelsHITACHI LTD·Filed 1988·Granted May 15, 1990·38 cites·12 claims
- 1277US6032015AApparatus for printing on both sides of an image printing medium by one processHITACHI KOKI KK·Filed 1998·Granted Feb 29, 2000·23 cites·6 claims
- 1371US4572651AMethod for developing an electrostatic latent image in an electrophotographic recording apparatusHITACHI LTD·Filed 1982·Granted Feb 25, 1986·15 cites·5 claims
- 1469US5848323AApparatus for printing images on both sides of an image printing medium by one processHITACHI KOKI KK·Filed 1996·Granted Dec 8, 1998·18 cites·7 claims
- 1568US4545325ADeveloping apparatusHITACHI LTD·Filed 1983·Granted Oct 8, 1985·15 cites·10 claims
- 1667US5237377ACleaning device for dry electrophotographic deviceHITACHI KOKI KK·Filed 1992·Granted Aug 17, 1993·17 cites·20 claims
- 1763US4314257AThermomagnetic recording apparatusHITACHI LTD·Filed 1980·Granted Feb 2, 1982·12 cites·8 claims
- 1862US5701560AImage forming apparatus having a photosensitive body formed of a base material consisting of As2 Se3 or a-Si and a methodHITACHI KOKI KK·Filed 1996·Granted Dec 23, 1997·15 cites·25 claims
- 1961US5659841AElectrostatic recording control method and electrostatic recording apparatusHITACHI KOKI KK·Filed 1995·Granted Aug 19, 1997·17 cites·16 claims
- 2057US6330414B1Developing system having a plurality of developing rollers with opposing magnets of same polarityHITACHI KOKI KK·Filed 1999·Granted Dec 11, 2001·14 cites·14 claims
- 2157US4822702AMethod for forming multi-color toner imageHITACHI LTD·Filed 1982·Granted Apr 18, 1989·10 cites·6 claims
- 2257US4052206AElectrophotographyHITACHI LTD·Filed 1975·Granted Oct 4, 1977·8 cites·10 claims
- 2355US5416571ADeveloping device for electrophotograph-type printerHITACHI KOKI KK·Filed 1994·Granted May 16, 1995·11 cites·8 claims
- 2454US5869214AColor image forming apparatus and color image forming method thereofHITACHI KOKI KK·Filed 1997·Granted Feb 9, 1999·13 cites·6 claims
- 2553US5579096AImaging apparatus and method for cleaning transfer/conveyer meansHITACHI KOKI KK·Filed 1995·Granted Nov 26, 1996·12 cites·6 claims
- 2651US4208985AApparatus for monitoring the concentration of toner in a developer mixHITACHI KOKI KK·Filed 1978·Granted Jun 24, 1980·6 cites·14 claims
- 2748US4769672AElectrophotographic processHITACHI LTD·Filed 1987·Granted Sep 6, 1988·7 cites·5 claims
- 2842US5907755ADeveloping deviceHITACHI KOKI KK·Filed 1998·Granted May 25, 1999·6 cites·2 claims
- 2942US4374191ADry reversal developer for electrostatic photography and electrostatic photographic method using the sameHITACHI LTD·Filed 1980·Granted Feb 15, 1983·5 cites·13 claims
- 3041US5223952AImage recording device and a data processing apparatusHITACHI LTD·Filed 1991·Granted Jun 29, 1993·7 cites·16 claims
- 3141US4413285AFacsimile apparatusHITACHI LTD·Filed 1981·Granted Nov 1, 1983·6 cites·7 claims
- 3240US5832347AToner for recording electrostatic image and electrostatic recording method and apparatus using the sameHITACHI KOKI KK·Filed 1997·Granted Nov 3, 1998·5 cites·5 claims
- 3340US5422219AMethod and apparatus for forming toner imageHITACHI KOKI KK·Filed 1993·Granted Jun 6, 1995·5 cites·10 claims
- 3435US6047147AElectrostatic image forming apparatusHITACHI KOKI KK·Filed 1999·Granted Apr 4, 2000·3 cites·3 claims
- 3535US5473422AColor image forming deviceHITACHI KOKI KK·Filed 1994·Granted Dec 5, 1995·3 cites·6 claims
- 3635US4427755AMethod for transferring toner images in electrophotographyHITACHI LTD·Filed 1979·Granted Jan 24, 1984·2 cites·6 claims
- 3732US6157798AElectrostatic recording apparatusHITACHI KOKI KK·Filed 1999·Granted Dec 5, 2000·2 cites·9 claims
- 3831USRE38235EScanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixelsHITACHI LTD·Filed 1997·Granted Aug 26, 2003·0 cites·48 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →