Assignee
HOYA CORP
JP·2,045 granted patents·509 pending applications·24,737 citations·filing 1976–2025
Top patents by PatentIndex Score
2,554 records- 0199US12040003B2Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording and reproducing apparatusHOYA CORP·Filed 2022·Granted Jul 16, 2024·3 cites·19 claims
- 0299US11551714B2Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording and reproducing apparatusHOYA CORP·Filed 2021·Granted Jan 10, 2023·5 cites·20 claims
- 0398US11884584B2Glass for magnetic recording medium substrate or for glass spacer for magnetic recording and reproducingHOYA CORP·Filed 2022·Granted Jan 30, 2024·5 cites·20 claims
- 0498US11762279B2Mask blank, method for manufacturing reflective mask, and method for manufacturing semiconductor deviceHOYA CORP·Filed 2022·Granted Sep 19, 2023·3 cites·13 claims
- 0598US11480867B2Reflective mask blank, reflective mask and method of manufacturing semiconductor deviceHOYA CORP·Filed 2021·Granted Oct 25, 2022·4 cites·21 claims
- 0698USD925567SDisplay screen with transitional graphical user interfaceHOYA CORP·Filed 2019·Granted Jul 20, 2021·100 cites·1 claims
- 0798US7725013B2Electronic endoscope with brightness adjustment functionHOYA CORP·Filed 2006·Granted May 25, 2010·69 cites·20 claims
- 0898US7695833B2Solid body surface evaluation method, magnetic disk evaluation method, magnetic disk, and manufacturing method thereofHOYA CORP·Filed 2007·Granted Apr 13, 2010·71 cites·5 claims
- 0998US7597973B2Magnetic disk and method of producing the sameHOYA CORP·Filed 2006·Granted Oct 6, 2009·69 cites·5 claims
- 1098US7531485B2Method of producing a lubricant for a magnetic disk, lubricant for a magnetic disk, magnetic disk, and method of producing a magnetic diskHOYA CORP·Filed 2005·Granted May 12, 2009·71 cites·12 claims
- 1198US7419450B2Light source apparatus for electronic endoscope and electronic endoscope having the light source apparatusHOYA CORP·Filed 2005·Granted Sep 2, 2008·53 cites·19 claims
- 1298US6818576B2Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is appliedHOYA CORP·Filed 2002·Granted Nov 16, 2004·149 cites·11 claims
- 1398US6214429B1Disc substrates for information recording discs and magnetic discsHOYA CORP·Filed 1998·Granted Apr 10, 2001·229 cites·75 claims
- 1498US4521524AContrast enhancement filter for color CRT display devicesHOYA CORP·Filed 1982·Granted Jun 4, 1985·115 cites·7 claims
- 1597US12111566B2Reflective mask blank, reflective mask and manufacturing method thereof, and semiconductor device manufacturing methodHOYA CORP·Filed 2023·Granted Oct 8, 2024·2 cites·16 claims
- 1697US12105413B2Reflective mask blank, reflective mask, method of manufacturing reflective mask, and method of manufacturing semiconductor deviceHOYA CORP·Filed 2023·Granted Oct 1, 2024·2 cites·20 claims
- 1797US11938019B2Intraocular lens insertion deviceHOYA CORP·Filed 2023·Granted Mar 26, 2024·4 cites·12 claims
- 1897US11815807B2Reflective mask blank, reflective mask, method of manufacturing reflective mask, and method of manufacturing semiconductor deviceHOYA CORP·Filed 2022·Granted Nov 14, 2023·2 cites·19 claims
- 1997US11545178B2Substrate for magnetic disk and magnetic diskHOYA CORP·Filed 2021·Granted Jan 3, 2023·7 cites·20 claims
- 2097US11435662B2Mask blank, method for manufacturing transfer mask, and method for manufacturing semiconductor deviceHOYA CORP·Filed 2021·Granted Sep 6, 2022·3 cites·13 claims
- 2197USD925568SDisplay screen with transitional graphical user interfaceHOYA CORP·Filed 2019·Granted Jul 20, 2021·73 cites·1 claims
- 2297US10481484B2Reflective mask blank, reflective mask, method for manufacturing reflective mask blank, and method for manufacturing semiconductor deviceHOYA CORP·Filed 2017·Granted Nov 19, 2019·12 cites·20 claims
- 2397US9007878B2Glass for magnetic recording medium substrate and usage thereofHOYA CORP·Filed 2014·Granted Apr 14, 2015·41 cites·20 claims
- 2497US7999989B2Photochromic film, photochromic lens comprising the same, and method of manufacturing photochromic lensHOYA CORP·Filed 2007·Granted Aug 16, 2011·68 cites·22 claims
- 2597US7891212B2Magnetic disk glass substrateHOYA CORP·Filed 2005·Granted Feb 22, 2011·44 cites·7 claims
- 2697US7736768B2Magnetic disk and manufacturing method thereofHOYA CORP·Filed 2005·Granted Jun 15, 2010·69 cites·4 claims
- 2797US7670144B2Conductive layer, manufacturing method of the same, and signal transmission substrateHOYA CORP·Filed 2006·Granted Mar 2, 2010·66 cites·12 claims
- 2897US7639933B2Stage apparatus and image movement correction apparatus for camera using stage apparatusHOYA CORP·Filed 2006·Granted Dec 29, 2009·45 cites·14 claims
- 2997US7420886B2Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording mediumHOYA CORP·Filed 2007·Granted Sep 2, 2008·70 cites·3 claims
- 3097US7277254B2Magnetic recording disk and process for manufacture thereofHOYA CORP·Filed 2005·Granted Oct 2, 2007·74 cites·4 claims
- 3196US11999652B2Glass for magnetic recording medium substrate or for glass spacer to be used in magnetic recording/reproducing device, magnetic recording medium substrate, magnetic recording medium, glass spacer to be used in magnetic recording/reproducing device, and magnetic recording/reproducing deviceHOYA CORP·Filed 2020·Granted Jun 4, 2024·4 cites·20 claims
- 3296US11543744B2Mask blank, transfer mask, and method for manufacturing semiconductor deviceHOYA CORP·Filed 2021·Granted Jan 3, 2023·2 cites·18 claims
- 3396USD892833SDisplay screen with a transitional graphical user interfaceHOYA CORP·Filed 2018·Granted Aug 11, 2020·73 cites·1 claims
- 3496US9249049B2Cover glass for mobile terminals, manufacturing method of the same and mobile terminal deviceHOYA CORP·Filed 2014·Granted Feb 2, 2016·23 cites·9 claims
- 3596US9020334B1Imaging apparatusHOYA CORP·Filed 2014·Granted Apr 28, 2015·34 cites·5 claims
- 3696US8837929B2Imaging apparatusHOYA CORP·Filed 2013·Granted Sep 16, 2014·29 cites·21 claims
- 3796US7940296B2Image capturing unit for endoscopeHOYA CORP·Filed 2006·Granted May 10, 2011·66 cites·14 claims
- 3896US7914447B2Confocal scanning endoscope system and image display area adjustment method thereofHOYA CORP·Filed 2006·Granted Mar 29, 2011·60 cites·20 claims
- 3996US7593051B2CCD breakage prevention systemHOYA CORP·Filed 2006·Granted Sep 22, 2009·70 cites·11 claims
- 4096US7537846B2Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic diskHOYA CORP·Filed 2004·Granted May 26, 2009·74 cites·1 claims
- 4196US7440005B2EndoscopeHOYA CORP·Filed 2007·Granted Oct 21, 2008·67 cites·12 claims
- 4296US7252897B2Magnetic recording disk and process for manufacture thereofHOYA CORP·Filed 2003·Granted Aug 7, 2007·82 cites·6 claims
- 4396US7220500B1Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording mediumHOYA CORP·Filed 2000·Granted May 22, 2007·76 cites·21 claims
- 4496US7045215B2Magnetic recording disk and process for manufacture thereofHOYA CORP·Filed 2004·Granted May 16, 2006·69 cites·10 claims
- 4596US6759138B2Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layerHOYA CORP·Filed 2002·Granted Jul 6, 2004·94 cites·12 claims
- 4696US6595028B1Chemical reinforced glass substrate having desirable edge profile and method of manufacturing the sameHOYA CORP·Filed 2000·Granted Jul 22, 2003·73 cites·9 claims
- 4796US5654057ASheet 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 mediumHOYA CORP·Filed 1995·Granted Aug 5, 1997·143 cites·19 claims
- 4895USD1001496SContainer for contact lensHOYA CORP·Filed 2020·Granted Oct 17, 2023·4 cites·1 claims
- 4995US11650494B2Substrate with a multilayer reflective film, reflective mask blank, reflective mask, and semiconductor device manufacturing methodHOYA CORP·Filed 2022·Granted May 16, 2023·2 cites·19 claims
- 5095USD924914SDisplay screen with transitional graphical user interfaceHOYA CORP·Filed 2019·Granted Jul 13, 2021·47 cites·1 claims
Showing the top 50 of 2,554 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when HOYA CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →