Assignee
HOYA CORP
US2,045 patents
Top patents by PatentIndex Score
US6214429B1Apr 10, 2001
Disc substrates for information recording discs and magnetic discs
HOYA CORP229 citations99
USD925568SJul 20, 2021
Display screen with transitional graphical user interface
HOYA CORP73 citations98
USD925567SJul 20, 2021
Display screen with transitional graphical user interface
HOYA CORP100 citations98
US7914447B2Mar 29, 2011
Confocal scanning endoscope system and image display area adjustment method thereof
HOYA CORP60 citations98
US7749156B2Jul 6, 2010
Retractable treatment instrument for endoscope
HOYA CORP108 citations98
US7736768B2Jun 15, 2010
Magnetic disk and manufacturing method thereof
HOYA CORP69 citations98
US7725013B2May 25, 2010
Electronic endoscope with brightness adjustment function
HOYA CORP69 citations98
US7695833B2Apr 13, 2010
Solid body surface evaluation method, magnetic disk evaluation method, magnetic disk, and manufacturing method thereof
HOYA CORP71 citations98
US7670144B2Mar 2, 2010
Conductive layer, manufacturing method of the same, and signal transmission substrate
HOYA CORP66 citations98
US7623150B2Nov 24, 2009
Electronic endoscope
HOYA CORP70 citations98
US7597973B2Oct 6, 2009
Magnetic disk and method of producing the same
HOYA CORP69 citations98
US7559889B2Jul 14, 2009
Endoscope system
HOYA CORP64 citations98
US7440005B2Oct 21, 2008
Endoscope
HOYA CORP67 citations98
US7440661B2Oct 21, 2008
Configuration detection device for endoscope
HOYA CORP62 citations98
US7402162B2Jul 22, 2008
High frequency treatment instrument for endoscope
HOYA CORP134 citations98
US6818576B2Nov 16, 2004
Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied
HOYA CORP149 citations98
US6812473B1Nov 2, 2004
Electron beam drawing mask blank, electron beam drawing mask, and method of manufacturing the same
HOYA CORP81 citations98
US6287429B1Sep 11, 2001
Magnetic recording medium having an improved magnetic characteristic
HOYA CORP87 citations98
US6251813B1Jun 26, 2001
Optical glass and its use
HOYA CORP83 citations98
USD892833SAug 11, 2020
Display screen with a transitional graphical user interface
HOYA CORP73 citations97
USD892832SAug 11, 2020
Display screen with a transitional graphical user interface
HOYA CORP55 citations97
US8382769B2Feb 26, 2013
Intraocular lens insertion device
HOYA CORP69 citations97
US7999989B2Aug 16, 2011
Photochromic film, photochromic lens comprising the same, and method of manufacturing photochromic lens
HOYA CORP68 citations97
US7828725B2Nov 9, 2010
Bent state holding mechanism of an endoscope
HOYA CORP97 citations97
US7806903B2Oct 5, 2010
Clipping instrument for an endoscopic surgical device
HOYA CORP82 citations97
US7766818B2Aug 3, 2010
Electronic endoscope system
HOYA CORP83 citations97
US7593051B2Sep 22, 2009
CCD breakage prevention system
HOYA CORP70 citations97
US7537846B2May 26, 2009
Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk
HOYA CORP74 citations97
US7531485B2May 12, 2009
Method of producing a lubricant for a magnetic disk, lubricant for a magnetic disk, magnetic disk, and method of producing a magnetic disk
HOYA CORP71 citations97
US7420886B2Sep 2, 2008
Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium
HOYA CORP70 citations97
US7277254B2Oct 2, 2007
Magnetic recording disk and process for manufacture thereof
HOYA CORP74 citations97
US7252897B2Aug 7, 2007
Magnetic recording disk and process for manufacture thereof
HOYA CORP82 citations97
US7220500B1May 22, 2007
Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium
HOYA CORP76 citations97
US7090934B2Aug 15, 2006
Perpendicular magnetic recording medium
HOYA CORP69 citations97
US7045215B2May 16, 2006
Magnetic recording disk and process for manufacture thereof
HOYA CORP69 citations97
US6759138B2Jul 6, 2004
Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer
HOYA CORP94 citations97
US6679996B1Jan 20, 2004
Metal oxide pattern forming method
HOYA CORP94 citations97
US6670055B2Dec 30, 2003
Magnetic recording medium and manufacturing method therefor
HOYA CORP87 citations97
US6637880B1Oct 28, 2003
Spectacle lens and manufacturing method therefor
HOYA CORP85 citations97
US5972460AOct 26, 1999
Information recording medium
HOYA CORP98 citations97
US5654057AAug 5, 1997
Sheet glass flattening method, method of manufacturing glass substrate for an information recording disk using flattened glass, method of manufacturing a magnetic recording disk using glass substrate, and magnetic recording medium
HOYA CORP143 citations97
US7940296B2May 10, 2011
Image capturing unit for endoscope
HOYA CORP66 citations96
USD597116SJul 28, 2009
Digital camera
HOYA CORP50 citations96
US6595028B1Jul 22, 2003
Chemical reinforced glass substrate having desirable edge profile and method of manufacturing the same
HOYA CORP73 citations96
US6533418B1Mar 18, 2003
System for making spectacles to order
HOYA CORP116 citations96
US6413894B1Jul 2, 2002
Optical glass and optical product
HOYA CORP58 citations96
US6339197B1Jan 15, 2002
Multilayer printed circuit board and the manufacturing method
HOYA CORP153 citations96
US6335124B1Jan 1, 2002
Phase shift mask and phase shift mask blank
HOYA CORP72 citations96
US6332338B1Dec 25, 2001
Method of producing glass substrate for information recording medium
HOYA CORP67 citations96
US6250758B1Jun 26, 2001
Plastic optical devices having antireflection film and mechanism for equalizing thickness of antireflection film
HOYA CORP103 citations96
Showing the top 50 of 2,045 patents by PatentIndex Score.