Inventor · disambiguated record
Yasunobu Ogata
Also filed as: OGATA YASUNOBU
32 granted patents·4 pending applications·558 citations·filing 1980–2020
97Inventor score
Files withHITACHI METALS LTD14RICOH CO LTD7TAKAHASHI MIGAKU4SUMITOMO ELECTRIC INDUSTRIES3YOSHIDA TOMOFUMI2
Top patents by PatentIndex Score
36 records- 0198US4668310AAmorphous alloysHITACHI METALS LTD·Filed 1983·Granted May 26, 1987·144 cites·2 claims
- 0294US6302225B1Polycrystal diamond toolSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Oct 16, 2001·101 cites·6 claims
- 0391US6261329B1Diamond sintered body having high strength and high wear resistance, and tool including the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Jul 17, 2001·54 cites·9 claims
- 0488US4451876ASwitching regulatorHITACHI METALS LTD·Filed 1982·Granted May 29, 1984·32 cites·6 claims
- 0587US8206606B2Oxide magnetic materialHOSOKAWA SEIICHI·Filed 2008·Granted Jun 26, 2012·10 cites·11 claims
- 0685US9690231B2Toner container, developing device, process cartridge, and image forming apparatus that include an operating member to move a shutter for a toner outlet via a linking memberYOSHIDA TOMOFUMI·Filed 2014·Granted Jun 27, 2017·2 cites·31 claims
- 0780US4306908AFerromagnetic amorphous alloyHITACHI LTD·Filed 1980·Granted Dec 22, 1981·20 cites·11 claims
- 0879US9261816B2Developer amount detector, developing device, process unit, and image forming apparatusSAKAYA KOHTA·Filed 2014·Granted Feb 16, 2016·2 cites·20 claims
- 0979US6528159B1Sintered diamond tool and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1999·Granted Mar 4, 2003·35 cites·36 claims
- 1076US9378876B2Ferromagnetic particles and process for producing the same, and anisotropic magnet, bonded magnet and compacted magnetTAKAHASHI MIGAKU·Filed 2012·Granted Jun 28, 2016·3 cites·6 claims
- 1173US7881635B2Image forming apparatus including a detachable convey-guiding member detachably attached to a fixed convey-guiding member fixed to a device main bodyRICOH CO LTD·Filed 2008·Granted Feb 1, 2011·4 cites·16 claims
- 1272US6383407B2Bonded magnet, magnet roll, a ferrite powder used therefor and method for producing sameHITACHI METALS LTD·Filed 2001·Granted May 7, 2002·8 cites·14 claims
- 1371US11231664B2Toner container having a shutter, a lever disposed on one side, and a pivoting portion on the other side which rotate together with a common shaftRICOH CO LTD·Filed 2020·Granted Jan 25, 2022·0 cites·10 claims
- 1471US10564572B2Toner container with an operating structure disposed on a first side, and a shutter disposed on a second sideRICOH CO LTD·Filed 2019·Granted Feb 18, 2020·0 cites·20 claims
- 1571US6858156B2Ferrite magnet and both rotor and magnet roll comprising the sameHITACHI METALS LTD·Filed 2003·Granted Feb 22, 2005·8 cites·5 claims
- 1670US7962079B2Fixing device and image forming apparatusRICOH CO LTD·Filed 2008·Granted Jun 14, 2011·3 cites·15 claims
- 1769US7970312B2Image forming apparatusRICOH CO LTD·Filed 2009·Granted Jun 28, 2011·2 cites·12 claims
- 1869US4581080AMagnetic head alloy material and method of producing the sameHITACHI METALS LTD·Filed 1984·Granted Apr 8, 1986·16 cites·5 claims
- 1968US10915040B2Toner container with an operating structure disposed on a first side, a shutter disposed on a second side, and a lockRICOH CO LTD·Filed 2019·Granted Feb 9, 2021·0 cites·16 claims
- 2068US10365584B2Toner container, developing device, process cartridge, and image forming apparatus that include a toner container contacting surface to contact with a developing device engagement releasing structureRICOH CO LTD·Filed 2018·Granted Jul 30, 2019·0 cites·19 claims
- 2168US7906036B2Ferrite sintered magnetHITACHI METALS LTD·Filed 2004·Granted Mar 15, 2011·9 cites·7 claims
- 2268US6537463B2Resin-bonded magnet, its product, and ferrite magnet powder and compound used thereforHITACHI METALS LTD·Filed 2000·Granted Mar 25, 2003·11 cites·17 claims
- 2368US5958284AFerrite magnet and method for producing sameHITACHI METALS LTD·Filed 1997·Granted Sep 28, 1999·23 cites·10 claims
- 2467US4931619AGlow plug for diesel enginesHITACHI METALS LTD·Filed 1988·Granted Jun 5, 1990·26 cites·20 claims
- 2564US10025227B2Toner container, developing device, process cartridge, and image forming apparatus that include a toner container contacting surface to contact with a developing device engagement releasing structureYOSHIDA TOMOFUMI·Filed 2017·Granted Jul 17, 2018·0 cites·16 claims
- 2664US7169319B2Anisotropic, sintered ferrite magnet and method for producing the sameNEOMAX CO LTD·Filed 2004·Granted Jan 30, 2007·5 cites·4 claims
- 2762US9014593B2Sealing assembly, developing device, process unit, and image forming apparatus incorporating sameOGATA YASUNOBU·Filed 2013·Granted Apr 21, 2015·1 cites·13 claims
- 2857US2016189836A1Ferromagnetic particles and process for producing the same, anisotropic magnet and bonded magnetTODA KOGYO CORP·Filed 2016·Application pending·0 cites
- 2956US5538657AMethod of producing ferrite magnetHITACHI METALS LTD·Filed 1994·Granted Jul 23, 1996·12 cites·10 claims
- 3055US6284150B1Bonded magnet, magnet roll, a ferrite powder used therefor and method for producing sameHITACHI METALS LTD·Filed 1999·Granted Sep 4, 2001·11 cites·26 claims
- 3151US2012244356A1Ferromagnetic particles and process for producing the same, anisotropic magnet and bonded magnetTAKAHASHI MIGAKU·Filed 2010·Application pending·0 cites
- 3248US4525222AMethod of heat-treating amorphous materialHITACHI METALS LTD·Filed 1984·Granted Jun 25, 1985·7 cites·3 claims
- 3339US6737011B1Method for producing ferrite magnetHITACHI METALS LTD·Filed 1998·Granted May 18, 2004·4 cites·7 claims
- 3439US2013257573A1Ferromagnetic particles and process for producing the same, anisotropic magnet and bonded magnetTAKAHASHI MIGAKU·Filed 2011·Application pending·0 cites
- 3537US2014085023A1Process for producing ferromagnetic particles, anisotropic magnet, bonded magnet and compacted magnetTAKAHASHI MIGAKU·Filed 2012·Application pending·0 cites
- 3634US5032570AMethod for producing ceramic superconducting material using intermediate productsHITACHI METALS LTD·Filed 1988·Granted Jul 16, 1991·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →