Inventor · disambiguated record
Kazutoshi Kato
Also filed as: KATO KAZUTOSHI
27 granted patents·4 pending applications·725 citations·filing 1986–2020
97Inventor score
Files withSEIKO EPSON CORP13KATO KAZUTOSHI6NIPPON TELEGRAPH & TELEPHONE4HITACHI LTD3HOYA LENS MFG PHILIPPINES INC1
Top patents by PatentIndex Score
31 records- 0193US4809091ADisk apparatusHITACHI LTD·Filed 1987·Granted Feb 28, 1989·88 cites·17 claims
- 0292US7159981B2Progressive refractive power lensSEIKO EPSON CORP·Filed 2004·Granted Jan 9, 2007·77 cites·24 claims
- 0391US6019470AProgressive multifocal lens and manufacturing method of eyeglass lens and progressive multifocal lensSEIKO EPSON CORP·Filed 1996·Granted Feb 1, 2000·124 cites·20 claims
- 0490US5644374AVariable focus type eyesight correcting apparatusSEIKO EPSON CORP·Filed 1995·Granted Jul 1, 1997·110 cites·5 claims
- 0586US6199983B1Apparatus and method for manufacturing a progressive multi-focal lensSEIKO EPSON CORP·Filed 1997·Granted Mar 13, 2001·78 cites·12 claims
- 0682US5926250AMultifocal lens for eyeglass and eyeglass lensSEIKO EPSON CORP·Filed 1996·Granted Jul 20, 1999·61 cites·8 claims
- 0780US7070274B2Spectacle lensSEIKO EPSON CORP·Filed 2005·Granted Jul 4, 2006·22 cites·18 claims
- 0875US6782210B1Optical packet routing network system based on optical label switching techniqueNIPPON TELEGRAPH & TELEPHONE·Filed 2000·Granted Aug 24, 2004·11 cites·13 claims
- 0971US7159982B2Method for providing design data and system for providing design dataSEIKO EPSON CORP·Filed 2005·Granted Jan 9, 2007·9 cites·20 claims
- 1070US7364292B2Method of designing progressive power lens groupSEIKO EPSON CORP·Filed 2006·Granted Apr 29, 2008·8 cites·3 claims
- 1168US8807746B2Spectacle lens, spectacles, and method for manufacturing spectacle lensKATO KAZUTOSHI·Filed 2011·Granted Aug 19, 2014·3 cites·6 claims
- 1267US8684522B2Progressive-power lens and progressive-power lens design methodKATO KAZUTOSHI·Filed 2012·Granted Apr 1, 2014·3 cites·7 claims
- 1367US7113701B2Optical packet routing network system based on optical label switching techniqueNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted Sep 26, 2006·6 cites·4 claims
- 1466US7175277B2Generation system of design data, generation method of design data, recording medium and programSEIKO EPSON CORP·Filed 2005·Granted Feb 13, 2007·4 cites·14 claims
- 1562US7120358B2Optical packet routing network system based on optical label switching techniqueNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted Oct 10, 2006·4 cites·3 claims
- 1661US9372339B2Wavelength swept light sourceTOYODA SEIJI·Filed 2012·Granted Jun 21, 2016·2 cites·16 claims
- 1760US5886766AProgressive multifocal lens and manufacturing method thereforSEIKO EPSON CORP·Filed 1996·Granted Mar 23, 1999·27 cites·18 claims
- 1859US5455642AProgressive power lensSIEKO EPSON CORP·Filed 1991·Granted Oct 3, 1995·27 cites·13 claims
- 1958US4691154AStepping motor control systemHITACHI LTD·Filed 1986·Granted Sep 1, 1987·16 cites·3 claims
- 2052US8550622B2Progressive power lens and progressive power lens design methodMORI TAKATERU·Filed 2011·Granted Oct 8, 2013·1 cites·5 claims
- 2149US5270746AEyeglass lensSEIKO EPSON CORP·Filed 1991·Granted Dec 14, 1993·15 cites·11 claims
- 2249US2014337252A1Design data providing system, data server, design data providing method, specification data providing methodHOYA LENS MFG PHILIPPINES INC·Filed 2012·Application pending·0 cites
- 2344US8777407B2Progressive-power lens and progressive-power lens design methodKATO KAZUTOSHI·Filed 2012·Granted Jul 15, 2014·0 cites·7 claims
- 2444US7159980B2Progressive refractive power lens and production method thereforSEIKO EPSON CORP·Filed 2004·Granted Jan 9, 2007·1 cites·15 claims
- 2544US5335026AEyeglass lensSEIKO EPSON CORP·Filed 1993·Granted Aug 2, 1994·11 cites·7 claims
- 2642US8960900B2Progressive-power lensKATO KAZUTOSHI·Filed 2012·Granted Feb 24, 2015·0 cites·4 claims
- 2742US6704754B1Method for shared use of medium-exchangeable storage device for purposes of backup and file system, and medium-exchangeable recording systemHITACHI LTD·Filed 2000·Granted Mar 9, 2004·6 cites·17 claims
- 2841US2013057825A1Progressive-Power Lens Selector, Progressive Power Lens Selection Method, and Non-Transitory Computer Readable Storage Medium Storing A Progressive-Power Lens Selection ProgramKATO KAZUTOSHI·Filed 2012·Application pending·0 cites
- 2940US2012229755A1Progressive-Power LensKATO KAZUTOSHI·Filed 2012·Application pending·0 cites
- 3038US5949120ASemiconductor photodetectorNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Sep 7, 1999·11 cites·6 claims
- 3132US2022397773A1Method for designing eyeglass lens, designing device, server device, order system, and information providing methodSCHOOL JURIDICAL PERSON THE KITASATO INST·Filed 2020·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Kazutoshi Kato 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 →