Inventor
KITANI AKIRA
JP15 patents
⚠️ This page may combine multiple inventors who share the name “KITANI AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOYA CORP
10 patentsUS5710615AJan 20, 1998
Progressive power multifocal lens
HOYA CORP60 citations95
US6935744B2Aug 30, 2005
Bi-aspherical type progressive-power lens
HOYA CORP16 citations92
US6712467B1Mar 30, 2004
Progressive-power lens and design process for same
HOYA CORP50 citations92
US5708492AJan 13, 1998
Progressive power multifocal lens
HOYA CORP28 citations92
US7399080B2Jul 15, 2008
Bi-aspherical type progressive-power lens and method of designing the same
HOYA CORP11 citations84
US8002405B2Aug 23, 2011
Progressive power lens manufacturing method and progressive power lens
HOYA CORP7 citations76
US7241010B2Jul 10, 2007
Bi-aspherical type progressive-power lens
HOYA CORP6 citations73
US4934808AJun 19, 1990
Progressive power omnifocal lens
HOYA CORP9 citations73
US7731357B2Jun 8, 2010
Method for designing group of bi-aspherical type progressive-power lenses, and group of bi-aspherical type progressive-power lenses
HOYA CORP4 citations62
US8699016B2Apr 15, 2014
Progressive power lens, method of designing progressive power lens and method of evaluating progressive power lens
HOYA CORP0 citations51