Inventor · disambiguated record
Makoto Obu
Also filed as: OBU MAKOTO
46 granted patents·1,969 citations·filing 1983–2008
99Inventor score
Top patents by PatentIndex Score
46 records- 0198US6324374B1Belt device and unit device including belt device and image forming apparatus using the belt device and unit deviceRICOH KK·Filed 2000·Granted Nov 27, 2001·90 cites·16 claims
- 0297US7054585B2Belt device and unit device including belt device and image forming apparatus using the belt device and unit deviceRICOH KK·Filed 2005·Granted May 30, 2006·25 cites·28 claims
- 0397US6347212B1Image forming apparatus having improved image carrier cleaningRICOH KK·Filed 2000·Granted Feb 12, 2002·91 cites·131 claims
- 0497US5208612AImage recording apparatus constituting of selectable unitsRICOH KK·Filed 1990·Granted May 4, 1993·95 cites·14 claims
- 0596US5923930AApparatus for controlling density of liquid developing solution and apparatus for forming imagesRICOH KK·Filed 1998·Granted Jul 13, 1999·84 cites·25 claims
- 0696US5235384AImage forming apparatus with replaceable process unitsRICOH KK·Filed 1990·Granted Aug 10, 1993·72 cites·11 claims
- 0796US4760422ADeveloping device using single component tonerRICOH KK·Filed 1986·Granted Jul 26, 1988·66 cites·10 claims
- 0895US7343126B2Image forming apparatus including a transfer belt having image forming units disposed thereaboutRICOH KK·Filed 2007·Granted Mar 11, 2008·15 cites·14 claims
- 0995US6597884B2Image forming apparatus including electrostatic conveyance of charged tonerRICOH KK·Filed 2001·Granted Jul 22, 2003·79 cites·59 claims
- 1095US6556802B2Belt device and unit device including belt device and image forming apparatus using the belt device and unit deviceRICOH KK·Filed 2001·Granted Apr 29, 2003·40 cites·9 claims
- 1195US5493365AOperating section for an image forming apparatusRICOH KK·Filed 1994·Granted Feb 20, 1996·64 cites·20 claims
- 1294US7693466B2Method for arranging image forming sectionsRICOH KK·Filed 2008·Granted Apr 6, 2010·11 cites·5 claims
- 1394US6308027B1Image forming apparatus having a common sheet processing stationRICOH KK·Filed 2000·Granted Oct 23, 2001·75 cites·17 claims
- 1494US5848329AImage forming apparatus having a mounting/dismounting mechanismRICOH KK·Filed 1997·Granted Dec 8, 1998·83 cites·13 claims
- 1593US6757512B2Tandem image forming device, image forming apparatus and method for using the sameRICOH KK·Filed 2001·Granted Jun 29, 2004·32 cites·61 claims
- 1693US6571071B2Consumption information management apparatus, image formation apparatus, and consumption information management systemRICOH KK·Filed 2001·Granted May 27, 2003·62 cites·43 claims
- 1793US6108508AImage forming apparatus using wet type developing deviceRICOH KK·Filed 1998·Granted Aug 22, 2000·60 cites·17 claims
- 1893US5953559ADevice and method for forming full-color imagesRICOH KK·Filed 1998·Granted Sep 14, 1999·59 cites·9 claims
- 1993US4930438ADeveloping device using a single component developerDEMIZU HIROMI·Filed 1987·Granted Jun 5, 1990·70 cites·26 claims
- 2093US4696255ADeveloping apparatusRICOH KK·Filed 1985·Granted Sep 29, 1987·47 cites·16 claims
- 2192US7203452B2Tandem image forming device having a side-by-side arrangement of image forming sectionsRICOH KK·Filed 2004·Granted Apr 10, 2007·28 cites·16 claims
- 2290US5987281AImage forming apparatusRICOH KK·Filed 1998·Granted Nov 16, 1999·48 cites·29 claims
- 2389US6405008B1Image forming apparatus using a developing liquid, developing device therefor and program recording mediumRICOH KK·Filed 2000·Granted Jun 11, 2002·28 cites·59 claims
- 2489US6292305B1Virtual screen display deviceRICOH KK·Filed 1998·Granted Sep 18, 2001·77 cites·36 claims
- 2589US5666616AWet-type image forming apparatus for forming a condensed toner imageRICOH KK·Filed 1995·Granted Sep 9, 1997·49 cites·24 claims
- 2688US6941102B2Belt device and unit device including belt device and image forming apparatus using the belt device and unit deviceRICOH KK·Filed 2004·Granted Sep 6, 2005·19 cites·18 claims
- 2788US6768891B2Belt device and unit device including belt device and image forming apparatus using the belt device and unit deviceRICOH KK·Filed 2003·Granted Jul 27, 2004·20 cites·13 claims
- 2888US5754202AInk jet recording apparatusRICOH KK·Filed 1996·Granted May 19, 1998·77 cites·10 claims
- 2987US5987282AImage forming apparatus with a developing device using a developing liquidRICOH KK·Filed 1998·Granted Nov 16, 1999·41 cites·16 claims
- 3086US6545803B1Virtual screen display deviceRICOH KK·Filed 2001·Granted Apr 8, 2003·28 cites·12 claims
- 3186US5652080AMethods and apparatus to duplicate images on various image carrying media using liquid carrier based developerRICOH KK·Filed 1995·Granted Jul 29, 1997·39 cites·67 claims
- 3282US5864737AImage forming device which forms an electric field to discharge an objectRICOH KK·Filed 1996·Granted Jan 26, 1999·33 cites·41 claims
- 3377US6501932B2Image forming apparatus using a developing liquid, developing device therefor and program recording mediumRICOH KK·Filed 2002·Granted Dec 31, 2002·14 cites·4 claims
- 3477US5300952AThermal image forming equipment forms image directly on image carrier or paper sheetRICOH KK·Filed 1991·Granted Apr 5, 1994·23 cites·1 claims
- 3576US4589730ALight transmission control apparatus using air bubblesRICOH KK·Filed 1983·Granted May 20, 1986·29 cites·20 claims
- 3675US5610725ACommunication system for managing data of resources of image forming unitRICOH KK·Filed 1995·Granted Mar 11, 1997·44 cites·13 claims
- 3774US5371522AApparatus for erasing and recording data in a thermosensitive recording mediumRICOH KK·Filed 1993·Granted Dec 6, 1994·18 cites·15 claims
- 3872US6072972AImage forming apparatus having liquid developing device for forming compact developing layerRICOH KK·Filed 1997·Granted Jun 6, 2000·21 cites·51 claims
- 3967US5504590ACommunication system for managing data of resources of image forming unitRICOH KK·Filed 1995·Granted Apr 2, 1996·30 cites·9 claims
- 4065US5379058ARecording apparatus using a thermosensitive recording mediumRICOH KK·Filed 1993·Granted Jan 3, 1995·20 cites·14 claims
- 4164US5051760ADirect image recording apparatus using tonerRICOH KK·Filed 1990·Granted Sep 24, 1991·20 cites·6 claims
- 4257US5619243AImage recording and erasing methodRICOH KK·Filed 1994·Granted Apr 8, 1997·13 cites·22 claims
- 4353US5612278AReversible image recording method using reversible thermosensitive recording materialRICOH KK·Filed 1994·Granted Mar 18, 1997·7 cites·6 claims
- 4451US6226468B1Image forming method and apparatus having a ratio of a thickness or a weight per unit area between liquid developer on a developing device and image carrier being smaller than about 0.71RICOH KK·Filed 1999·Granted May 1, 2001·9 cites·18 claims
- 4550US5517228AApparatus for displaying a recording medium sheet and printing an image thereonRICOH KK·Filed 1993·Granted May 14, 1996·9 cites·19 claims
- 4640US5845186AWet image forming apparatus including an intermediate transfer body having projectionsRICOH KK·Filed 1997·Granted Dec 1, 1998·5 cites·38 claims
Join the waitlist — get patent alerts
Get an alert when Makoto Obu 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 →