Inventor · disambiguated record
Masumi Ito
Also filed as: ITO MASUMI
40 granted patents·9 pending applications·1,071 citations·filing 1989–2020
98Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES34TOSHIBA KK5MITSUBISHI CHEM CORP4MITSUBISHI CHEM IND2TOKYO DENPA KK2
Top patents by PatentIndex Score
49 records- 0197US6557383B1Drum type washing machineTOSHIBA KK·Filed 2000·Granted May 6, 2003·100 cites·18 claims
- 0296US6564594B1Drum type washing machineTOSHIBA KK·Filed 2000·Granted May 20, 2003·90 cites·18 claims
- 0396US6539753B1Drum type washing machineTOSHIBA KK·Filed 2000·Granted Apr 1, 2003·111 cites·16 claims
- 0494US6474114B1Drum type washing machine with aligning structure for rotor and stator of drive motorTOSHIBA KK·Filed 2000·Granted Nov 5, 2002·113 cites·13 claims
- 0587US5314518AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted May 24, 1994·59 cites·14 claims
- 0685US6530245B1Drum type washing machine with drying functionTOSHIBA KK·Filed 2000·Granted Mar 11, 2003·26 cites·8 claims
- 0785US5755849AMethod for elongating glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted May 26, 1998·39 cites·6 claims
- 0881US5867618AOptical fiber grating and method of manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Feb 2, 1999·70 cites·8 claims
- 0979US5021384AProcess for producing crystalline oxide of vanadium-phosphorus system and catalyst containing the crystalline oxideMITSUBISHI CHEM IND·Filed 1989·Granted Jun 4, 1991·13 cites·16 claims
- 1076US5788734AMethod for drawing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Aug 4, 1998·24 cites·6 claims
- 1175US5676725AMethod of manufacturing single-mode optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Oct 14, 1997·24 cites·4 claims
- 1274US5368887AProcess for producing thin glass film by sol-gel methodSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Nov 29, 1994·32 cites·10 claims
- 1372US5470369AProcess for consolidation of porous preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Nov 28, 1995·22 cites·16 claims
- 1469US9186078B2Optical fiber sheetSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Granted Nov 17, 2015·4 cites·5 claims
- 1569US5859944AOptical connectorSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Jan 12, 1999·35 cites·67 claims
- 1669US5790726AOptical waveguide and process for producing itSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Aug 4, 1998·29 cites·11 claims
- 1768US5627933AOptical waveguide and process for producing itSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted May 6, 1997·28 cites·9 claims
- 1867US5330548AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Jul 19, 1994·18 cites·6 claims
- 1965US5530144AProcess for producing a phosphorus-vanadium oxide catalyst precursor, process for producing a phosphorus-vanadium oxide catalyst, and process for producing maleic anhydride by vapor phase oxidation using the catalystMITSUBISHI CHEM CORP·Filed 1994·Granted Jun 25, 1996·23 cites·27 claims
- 2063US5883990ALow transmission loss optical fiber having a gratingSUMITOMO ELECTRIC INDUSTRIES·Filed 1997·Granted Mar 16, 1999·25 cites·5 claims
- 2163US4978378AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1989·Granted Dec 18, 1990·21 cites·4 claims
- 2260US12012349B2Glass fine particle deposit and method for manufacturing glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Jun 18, 2024·0 cites·5 claims
- 2360US5513983AApparatus for vitrifying soot preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted May 7, 1996·16 cites·36 claims
- 2460US5128299AProcess for producing crystalline oxide of vanadium-phosphorus systemMITSUBISHI CHEM IND·Filed 1990·Granted Jul 7, 1992·6 cites·16 claims
- 2558US5496787AProcess for producing a vanadium-phosphorus oxide catalyst precursorMITSUBISHI CHEM CORP·Filed 1994·Granted Mar 5, 1996·15 cites·34 claims
- 2656US5360147ASliding nozzle for molten steel receiving vesselTOKYO YOGYO KK·Filed 1993·Granted Nov 1, 1994·8 cites·4 claims
- 2754US2021122664A1Method for manufacturing glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 2854US2021246065A1Method for producing glass particulate depositSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 2953US5895515AIncreasing a fluorine compound flow rate during a VAD processSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Apr 20, 1999·17 cites·7 claims
- 3053US5243677AQuartz optical waveguide and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Sep 7, 1993·16 cites·3 claims
- 3152US6625360B2Single-mode optical fibers and fabrication methods thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 2001·Granted Sep 23, 2003·6 cites·12 claims
- 3252US5193137AQuartz optical waveguide and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Mar 9, 1993·13 cites·6 claims
- 3352US2020262735A1Method for producing glass particulate deposit, method for producing glass preform, and glass preformSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 3450US5693115AProcess for production of glass preform for optical fiber including consolidating in a furnace with a temperature gradientSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Dec 2, 1997·10 cites·10 claims
- 3550US2020223736A1Method for producing glass fine particle deposit, method for producing glass base material, and glass fine particle depositSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 3649US5498731AOxide catalyst and process for producing maleic anhydride by using oxide catalystMITSUBISHI CHEM CORP·Filed 1994·Granted Mar 12, 1996·12 cites·16 claims
- 3749US5196383AMethod for producing rare earth element-doped glass by sol-gel processSUMITOMO ELECTRIC INDUSTRIES·Filed 1990·Granted Mar 23, 1993·10 cites·5 claims
- 3848US5224185AOptical switchSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Jun 29, 1993·13 cites·4 claims
- 3948US2016041090A1Method for manufacturing film, film-manufacturing process monitor device, and method for inspecting filmSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Application pending·0 cites
- 4045US5236482AMethod for producing glass preform for optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Aug 17, 1993·6 cites·3 claims
- 4143US2022033294A1Method for manufacturing glass fine particle deposit and method for manufacturing glass base materialSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Application pending·0 cites
- 4240US5179614AQuartz optical waveguide and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Jan 12, 1993·8 cites·2 claims
- 4340US2006124051A1Zinc oxide single crystalTOKYO DENPA KK·Filed 2005·Application pending·0 cites
- 4439US2008056984A1Hexagonal Wurtzite Type Single Crystal, Process For Producing The Same, And Hexagonal Wurtzite Type Single Crystal SubstrateTOKYO DENPA KK·Filed 2005·Application pending·0 cites
- 4536US2016105508A1Information processing apparatus, data processing system and data processing management methodFUJITSU LTD·Filed 2015·Application pending·0 cites
- 4635US5591870AProcess for producing a vanadium-phosphorus oxide catalyst precursorMITSUBISHI CHEM CORP·Filed 1995·Granted Jan 7, 1997·3 cites·2 claims
- 4735US5207813AMethod for producing glass articleSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted May 4, 1993·4 cites·8 claims
- 4828USRE35222EOptical fiber component optical coupler and method of producing thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Apr 30, 1996·1 cites·17 claims
- 4928US5202947AOptical fiber component optical coupler and method of producing thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 1991·Granted Apr 13, 1993·1 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when Masumi Ito 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 →