Inventor · disambiguated record
Masahiko Itaya
Also filed as: ITAYA MASAHIKO
54 granted patents·4 pending applications·998 citations·filing 1982–2006
99Inventor score
Files withKONISHIROKU PHOTO IND33RICOH KK12SAMSUNG ELECTRONICS CO LTD7AUSTRALIA RES LAB4NIPPON STEEL CORP2
Top patents by PatentIndex Score
58 records- 0197US6897002B2Liquid developer, image-fixing apparatus using the same, and image-forming apparatus using the sameRICOH KK·Filed 2003·Granted May 24, 2005·78 cites·30 claims
- 0293US6694112B2Developing device using a developing liquid including a rotatable agitator in a developing liquid reservoir and image forming apparatus including the sameRICOH KK·Filed 2001·Granted Feb 17, 2004·32 cites·97 claims
- 0393US6108508AImage forming apparatus using wet type developing deviceRICOH KK·Filed 1998·Granted Aug 22, 2000·60 cites·17 claims
- 0491US7004650B2Developing device using a developing liquid and image forming apparatus including the sameRICOH KK·Filed 2005·Granted Feb 28, 2006·10 cites·32 claims
- 0590US6038421AImage forming apparatus using a liquid development systemRICOH KK·Filed 1999·Granted Mar 14, 2000·49 cites·20 claims
- 0688US6029036ALiquid developing method and liquid developing apparatusAUSTRALIA RES LAB·Filed 1996·Granted Feb 22, 2000·45 cites·18 claims
- 0788US4624559ADeveloping method for electrostatic latent imageKONISHIROKU PHOTO IND·Filed 1986·Granted Nov 25, 1986·31 cites·27 claims
- 0887US5937247AGhostless developed image forming apparatus and methodRICOH KK·Filed 1998·Granted Aug 10, 1999·41 cites·16 claims
- 0986US7519318B2Electrophotolithographic image forming device and image developing methodSAMSUNG ELECTRONICS CO LTD·Filed 2005·Granted Apr 14, 2009·10 cites·8 claims
- 1086US6876822B2Methods for forming and developing an imageRICOH KK·Filed 2003·Granted Apr 5, 2005·17 cites·113 claims
- 1186US6539191B2Electrophotographic color image formation system and method using liquid developersRICOH KK·Filed 2001·Granted Mar 25, 2003·25 cites·24 claims
- 1286US4530597ABrush cleaning deviceKONISHIROKU PHOTO IND·Filed 1983·Granted Jul 23, 1985·26 cites·14 claims
- 1383US5327208AColor image forming apparatus with a multicolor detachable process unitKONISHIROKU PHOTO IND·Filed 1992·Granted Jul 5, 1994·26 cites·7 claims
- 1482US6515747B1Method and device for measuring a substance concentration in a liquidRICOH KK·Filed 2000·Granted Feb 4, 2003·19 cites·42 claims
- 1582US4480911ADeveloping apparatus and a developing method of an electrostatic imageKONISHIROKU PHOTO IND·Filed 1982·Granted Nov 6, 1984·22 cites·11 claims
- 1680US6137976AImage formation apparatus using a liquid developing agentAUSTRALIA RES LAB·Filed 1996·Granted Oct 24, 2000·31 cites·62 claims
- 1779US6466757B2Developing device using a developing liquid and image forming apparatus including the sameRICOH KK·Filed 2001·Granted Oct 15, 2002·17 cites·23 claims
- 1879US6167225ALiquid developing method of electrostatic latent image and liquid developing apparatusAUSTRALIA RES LAB·Filed 1996·Granted Dec 26, 2000·29 cites·36 claims
- 1979US6154624AImage forming apparatus using a developing liquidRICOH KK·Filed 1999·Granted Nov 28, 2000·27 cites·41 claims
- 2079US5030988AColor image forming apparatusKONISHIROKU PHOTO IND·Filed 1990·Granted Jul 9, 1991·25 cites·5 claims
- 2179US4492456ADevice for developing electrostatic latent imagesKONISHIROKU PHOTO IND·Filed 1982·Granted Jan 8, 1985·20 cites·4 claims
- 2278US4431296ADeveloping method and apparatus thereforKONISHIROKU PHOTO IND·Filed 1982·Granted Feb 14, 1984·19 cites·10 claims
- 2377US5054419AImage forming apparatusKONISHIROKU PHOTO IND·Filed 1990·Granted Oct 8, 1991·23 cites·31 claims
- 2474US6207336B1Liquid developing methodAUSTRALIA RES LAB·Filed 1998·Granted Mar 27, 2001·21 cites·12 claims
- 2574US4822711AElectrostatic image-developing process using a magnetic rollerKONISHIROKU PHOTO IND·Filed 1987·Granted Apr 18, 1989·18 cites·9 claims
- 2672US5075726AToner density control device with adjustable reference values for multiple developer copierKONISHIROKU PHOTO IND·Filed 1990·Granted Dec 24, 1991·19 cites·24 claims
- 2772US4486089AMagnetic brush developing meansKONISHIROKU PHOTO IND·Filed 1982·Granted Dec 4, 1984·15 cites·4 claims
- 2871US4979000APaper separating charger capable of discharging currents of various duty factors and frequenciesKONISHIROKU PHOTO IND·Filed 1989·Granted Dec 18, 1990·16 cites·8 claims
- 2971US4500616AExtraction developing method for electrostatic latent imagesKONISHIROKU PHOTO IND·Filed 1982·Granted Feb 19, 1985·14 cites·18 claims
- 3070US5103261AClamshell type color image forming apparatusKONISHIROKU PHOTO IND·Filed 1990·Granted Apr 7, 1992·21 cites·2 claims
- 3170US4669864AImage forming apparatusKONISHIROKU PHOTO IND·Filed 1986·Granted Jun 2, 1987·16 cites·21 claims
- 3269US5191378AElectrostatic recording apparatus in which a transfer material conveyance belt detach point is located downstream from the image retainerKONISHIROKU PHOTO IND·Filed 1990·Granted Mar 2, 1993·17 cites·1 claims
- 3367US4530595AToner cleaning method and apparatus in which voltage is impressed between electrostatic image holder and a film memberKONISHIROKU PHOTO IND·Filed 1982·Granted Jul 23, 1985·13 cites·26 claims
- 3466US4664505AElectrostatic image reproducing apparatusKONISHIROKU PHOTO IND·Filed 1986·Granted May 12, 1987·14 cites·4 claims
- 3563US5287161AColor image forming apparatus with a multicolor detachable process unitKONISHIROKU PHOTO IND·Filed 1991·Granted Feb 15, 1994·12 cites·1 claims
- 3661US7141346B2Liquid developer for image forming apparatusRICOH KK·Filed 2004·Granted Nov 28, 2006·7 cites·23 claims
- 3761US4908291AMethod of regulating the thickness of a developer layer containing magnetic carrier and toner particlesKONISHIROKU PHOTO IND·Filed 1988·Granted Mar 13, 1990·12 cites·43 claims
- 3859US7489893B2Hybrid type developing apparatus and developing methodSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Feb 10, 2009·2 cites·11 claims
- 3958US5121166ABelt type transfer deviceKONISHIROKU PHOTO IND·Filed 1990·Granted Jun 9, 1992·11 cites·3 claims
- 4057US5140411AImage reading apparatus capable of discriminating between a chromatic and an achromatic portion of an imageKONISHIROKU PHOTO IND·Filed 1990·Granted Aug 18, 1992·16 cites·8 claims
- 4157US5024181AMethod for the development of an electrostatic latent imageKONISHIROKU PHOTO IND·Filed 1990·Granted Jun 18, 1991·12 cites·26 claims
- 4254US4525056ADeveloping means for electrostatic latent imageKONISHIROKU PHOTO IND·Filed 1982·Granted Jun 25, 1985·8 cites·7 claims
- 4354US4499169ADeveloping methodKONISHIROKU PHOTO IND·Filed 1982·Granted Feb 12, 1985·8 cites·9 claims
- 4454US4479709ACleaning method for electrophotography and means thereforKONISHIROKU PHOTO IND·Filed 1982·Granted Oct 30, 1984·10 cites·29 claims
- 4548US4814818ADeveloper layer forming apparatusKONISHIROKU PHOTO IND·Filed 1987·Granted Mar 21, 1989·7 cites·11 claims
- 4643US7715748B2Electrophotographic image forming apparatus and developing method thereofSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted May 11, 2010·0 cites·19 claims
- 4743US4553500AApparatus and method for developing electrostatic latent imageKONISHIROKU PHOTO IND·Filed 1984·Granted Nov 19, 1985·5 cites·3 claims
- 4840US5394176AElectrostatic printing apparatusNIPPON STEEL CORP·Filed 1993·Granted Feb 28, 1995·5 cites·11 claims
- 4939US4478870ACorona image transfer methodKONISHIROKU PHOTO IND·Filed 1983·Granted Oct 23, 1984·3 cites·13 claims
- 5037US4477174ADeveloping deviceKONISHIROKU PHOTO IND·Filed 1982·Granted Oct 16, 1984·3 cites·28 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Masahiko Itaya 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 →