Inventor
KATO KAZUTOSHI
JP27 patents
⚠️ This page may combine multiple inventors who share the name “KATO KAZUTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
13 patentsUS7159981B2Jan 9, 2007
Progressive refractive power lens
SEIKO EPSON CORP77 citations98
US6019470AFeb 1, 2000
Progressive multifocal lens and manufacturing method of eyeglass lens and progressive multifocal lens
SEIKO EPSON CORP124 citations97
US5644374AJul 1, 1997
Variable focus type eyesight correcting apparatus
SEIKO EPSON CORP110 citations97
US6199983B1Mar 13, 2001
Apparatus and method for manufacturing a progressive multi-focal lens
SEIKO EPSON CORP78 citations96
US5926250AJul 20, 1999
Multifocal lens for eyeglass and eyeglass lens
SEIKO EPSON CORP61 citations96
US5886766AMar 23, 1999
Progressive multifocal lens and manufacturing method therefor
SEIKO EPSON CORP27 citations92
US7070274B2Jul 4, 2006
Spectacle lens
SEIKO EPSON CORP22 citations90
US5270746ADec 14, 1993
Eyeglass lens
SEIKO EPSON CORP15 citations82
US7364292B2Apr 29, 2008
Method of designing progressive power lens group
SEIKO EPSON CORP8 citations74
US7159982B2Jan 9, 2007
Method for providing design data and system for providing design data
SEIKO EPSON CORP9 citations73
US5335026AAug 2, 1994
Eyeglass lens
SEIKO EPSON CORP11 citations73
US7175277B2Feb 13, 2007
Generation system of design data, generation method of design data, recording medium and program
SEIKO EPSON CORP4 citations63
US7159980B2Jan 9, 2007
Progressive refractive power lens and production method therefor
SEIKO EPSON CORP1 citations52
NIPPON TELEGRAPH & TELEPHONE
4 patentsUS7113701B2Sep 26, 2006
Optical packet routing network system based on optical label switching technique
NIPPON TELEGRAPH & TELEPHONE6 citations72
US6782210B1Aug 24, 2004
Optical packet routing network system based on optical label switching technique
NIPPON TELEGRAPH & TELEPHONE11 citations72
US5949120ASep 7, 1999
Semiconductor photodetector
NIPPON TELEGRAPH & TELEPHONE11 citations68
US7120358B2Oct 10, 2006
Optical packet routing network system based on optical label switching technique
NIPPON TELEGRAPH & TELEPHONE4 citations61
KATO KAZUTOSHI
4 patentsUS8684522B2Apr 1, 2014
Progressive-power lens and progressive-power lens design method
KATO KAZUTOSHI3 citations61
US8807746B2Aug 19, 2014
Spectacle lens, spectacles, and method for manufacturing spectacle lens
KATO KAZUTOSHI3 citations60
US8960900B2Feb 24, 2015
Progressive-power lens
KATO KAZUTOSHI0 citations40
US8777407B2Jul 15, 2014
Progressive-power lens and progressive-power lens design method
KATO KAZUTOSHI0 citations40
HITACHI LTD
3 patentsUS4809091AFeb 28, 1989
Disk apparatus
HITACHI LTD88 citations92
US4691154ASep 1, 1987
Stepping motor control system
HITACHI LTD16 citations72
US6704754B1Mar 9, 2004
Method for shared use of medium-exchangeable storage device for purposes of backup and file system, and medium-exchangeable recording system
HITACHI LTD6 citations60