Inventor · disambiguated record
Tadashi Ishikawa
Also filed as: ARAI KIYOYUKI · ISHIKAWA TADASHI
79 granted patents·3 pending applications·1,175 citations·filing 1977–2024
99Inventor score
Top patents by PatentIndex Score
82 records- 0193US4698650ARecording apparatus and cassette for recording mediumCANON KK·Filed 1985·Granted Oct 6, 1987·76 cites·14 claims
- 0292US4831455APicture reading apparatusCANON KK·Filed 1987·Granted May 16, 1989·73 cites·10 claims
- 0390US4888618AImage forming apparatus having ambient condition detecting meansCANON KK·Filed 1988·Granted Dec 19, 1989·36 cites·68 claims
- 0489US5619403AMulti-output power supply apparatusCANON KK·Filed 1993·Granted Apr 8, 1997·95 cites·19 claims
- 0588US8653403B2Butt-welded joint and method for manufacturing sameHONMA RYUICHI·Filed 2010·Granted Feb 18, 2014·10 cites·5 claims
- 0688US6934497B2Image forming apparatus with belt, plural sensitized bodies, and belt positioning mechanismFUJI XEROX CO LTD·Filed 2003·Granted Aug 23, 2005·31 cites·9 claims
- 0787US4939580APicture reading apparatusCANON KK·Filed 1989·Granted Jul 3, 1990·43 cites·15 claims
- 0886US5627434AApparatus for operating a fluorescent lamp of an image forming apparatusCANON KK·Filed 1994·Granted May 6, 1997·66 cites·32 claims
- 0983US8992109B2Butt-welded joint of welded structure, and method for manufacturing the sameISHIKAWA TADASHI·Filed 2010·Granted Mar 31, 2015·7 cites·6 claims
- 1081US7574157B2Image formation device with auxiliary rollerFUJI XEROX CO LTD·Filed 2006·Granted Aug 11, 2009·6 cites·13 claims
- 1180US5552857AMulticolor image forming apparatusFUJI XEROX CO LTD·Filed 1995·Granted Sep 3, 1996·31 cites·11 claims
- 1280US4825295AImage reading apparatusCANON KK·Filed 1986·Granted Apr 25, 1989·35 cites·30 claims
- 1380US4607320APower supply device having a switched primary power supply and control means for maintaining a constant off period and a variable on periodCANON KK·Filed 1984·Granted Aug 19, 1986·30 cites·5 claims
- 1479US4709915ASorting apparatusCANON KK·Filed 1987·Granted Dec 1, 1987·23 cites·8 claims
- 1578US8280296B2Powder transporting device and image forming apparatusICHIKAWA TOMOYA·Filed 2008·Granted Oct 2, 2012·5 cites·18 claims
- 1676US7754033B2Method of improvement of toughness of heat affected zone at welded joint of steel plateNIPPON STEEL CORP·Filed 2003·Granted Jul 13, 2010·11 cites·7 claims
- 1774US12485677B2Liquid discharging apparatus and liquid accommodating deviceSEIKO EPSON CORP·Filed 2024·Granted Dec 2, 2025·0 cites·18 claims
- 1874US5636009AImage forming apparatus having charging memberCANON KK·Filed 1996·Granted Jun 3, 1997·24 cites·49 claims
- 1974US4338304AComposite for treating diabetesNIHON NOSAN KOGYO KABUSHIKI KA·Filed 1980·Granted Jul 6, 1982·18 cites·1 claims
- 2073US12459269B2Liquid discharging apparatus and liquid accommodating deviceSEIKO EPSON CORP·Filed 2024·Granted Nov 4, 2025·0 cites·22 claims
- 2173USD308222SDocument recorderCANON KK·Filed 1986·Granted May 29, 1990·14 cites·1 claims
- 2271US12472750B2Liquid discharging apparatus and liquid accommodating deviceSEIKO EPSON CORP·Filed 2024·Granted Nov 18, 2025·0 cites·16 claims
- 2371US7748596B2Welded structure having excellent resistance to brittle crack propagation and welding method thereforNIPPON STEEL CORP·Filed 2006·Granted Jul 6, 2010·4 cites·6 claims
- 2470US4772899AScanning mechanism for recording apparatusCANON KK·Filed 1986·Granted Sep 20, 1988·17 cites·3 claims
- 2570US4731668AImage reading apparatus including means for accurately determining the location of read image informationCANON KK·Filed 1987·Granted Mar 15, 1988·23 cites·20 claims
- 2669US6027260ACamera shutter and driving device having piezoelectric element for use therewithSEIKO PRECISION KK·Filed 1997·Granted Feb 22, 2000·10 cites·41 claims
- 2769US5289532AFacsimile apparatus providing facsimile transmission with forwardable voice communicationFUJI XEROX CO LTD·Filed 1991·Granted Feb 22, 1994·33 cites·17 claims
- 2869US4410541AComposite for improving lipid metabolismNIHON NOSAN KOGYO·Filed 1982·Granted Oct 18, 1983·29 cites·3 claims
- 2967US4838534APaper feed apparatusCANON KK·Filed 1988·Granted Jun 13, 1989·15 cites·7 claims
- 3065US8114528B2Electron beam welded joint excellent in brittle fracture resistanceISHIKAWA TADASHI·Filed 2007·Granted Feb 14, 2012·2 cites·9 claims
- 3165US7829202B2Large-heat-input butt welded joints having excellent brittle fracture resistanceNIPPON STEEL CORP·Filed 2004·Granted Nov 9, 2010·5 cites·10 claims
- 3265US5414862AApparatus for controlling a power sourceCANON KK·Filed 1992·Granted May 9, 1995·25 cites·18 claims
- 3364US5748460APower supply apparatusCANON KK·Filed 1997·Granted May 5, 1998·31 cites·6 claims
- 3464US4793301ALubricating system for an internal combustion engineFUJI HEAVY IND LTD·Filed 1987·Granted Dec 27, 1988·18 cites·4 claims
- 3563US7920816B2Developer collection device and image forming apparatusFUJI XEROX CO LTD·Filed 2009·Granted Apr 5, 2011·2 cites·5 claims
- 3663US5285368APower source device responsive to supplemental plural output voltagesCANON KK·Filed 1992·Granted Feb 8, 1994·28 cites·21 claims
- 3763US4444511AMode switching device in an electronic timepieceSEIKO KOKI KK·Filed 1981·Granted Apr 24, 1984·16 cites·9 claims
- 3862US5787303ADigital computer system capable of processing a plurality of instructions in parallel based on a VLIW architectureTOSHIBA KK·Filed 1997·Granted Jul 28, 1998·42 cites·27 claims
- 3962US4394376AMethod for preventing hypertriglyceridemiaNIHON NOSAN KOGYO·Filed 1982·Granted Jul 19, 1983·8 cites·5 claims
- 4059US7399371B2Treatment method for improving fatigue life and long-life metal material treated by using same treatmentNIPPON STEEL CORP·Filed 2004·Granted Jul 15, 2008·4 cites·2 claims
- 4158US5019840ARecording apparatus with improved sheet feedingCANON KK·Filed 1990·Granted May 28, 1991·18 cites·36 claims
- 4256US11446937B2Printing apparatusSEIKO EPSON CORP·Filed 2021·Granted Sep 20, 2022·0 cites·8 claims
- 4355US6038631AData processing system and method using virtual storage systemTOSHIBA KK·Filed 1997·Granted Mar 14, 2000·31 cites·13 claims
- 4452US4945255APower source deviceCANON KK·Filed 1988·Granted Jul 31, 1990·16 cites·12 claims
- 4551US11568313B2Control apparatus, analysis apparatus, communication system, data processing method, data transmission method, and non-transitory computer readable mediumNEC CORP·Filed 2018·Granted Jan 31, 2023·0 cites·17 claims
- 4651US9871277B2Magnesium-air fuel cell and power supply device using the sameAQUA POWER SYSTEM JAPAN·Filed 2014·Granted Jan 16, 2018·0 cites·7 claims
- 4751US9716280B2Magnesium-air fuel cellAQUA POWER SYSTEM JAPAN·Filed 2013·Granted Jul 25, 2017·0 cites·11 claims
- 4851US5612857APower supply apparatusCANON KK·Filed 1995·Granted Mar 18, 1997·14 cites·6 claims
- 4951US4187294AMethod for producing eggs containing a high amount of iodinated amino acidsNIHON NOSAN KOGYO·Filed 1978·Granted Feb 5, 1980·12 cites·1 claims
- 5051US2009067723A1Video image processing apparatus and video image processing methodTOSHIBA KK·Filed 2008·Application pending·0 cites
Showing the top 50 of 82 patent records by PatentIndex Score.
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