Inventor · disambiguated record
Osamu Yokoyama
Also filed as: YOKOYAMA OSAMU
100 granted patents·22 pending applications·2,317 citations·filing 1990–2024
99Inventor score
Top patents by PatentIndex Score
122 records- 0198US10281725B2Light flux diameter expanding element and image display deviceSEIKO EPSON CORP·Filed 2017·Granted May 7, 2019·40 cites·11 claims
- 0298US7190116B2Display device with a narrow frameSEIKO EPSON CORP·Filed 2005·Granted Mar 13, 2007·37 cites·13 claims
- 0398US6742907B2Illumination device and display device using itSEIKO EPSON CORP·Filed 2003·Granted Jun 1, 2004·213 cites·9 claims
- 0498US6547400B1Light source device, optical device, and liquid-crystal display deviceSEIKO EPSON CORP·Filed 1999·Granted Apr 15, 2003·295 cites·44 claims
- 0598US6011602ALighting apparatus with a light guiding body having projections in the shape of a trapezoidSEIKO EPSON CORP·Filed 1996·Granted Jan 4, 2000·331 cites·65 claims
- 0696US7131735B2Light source device, optical device, and liquid-crystal display deviceSEIKO EPSON CORP·Filed 2003·Granted Nov 7, 2006·54 cites·15 claims
- 0796US5161040AOptical system with aberration suppression and optical head utilizing the sameSEIKO EPSON CORP·Filed 1990·Granted Nov 3, 1992·103 cites·38 claims
- 0895USRE43738EDisplay device having a connection area outside the display areaKOBAYASHI HIDEKAZU·Filed 2011·Granted Oct 16, 2012·10 cites·19 claims
- 0995USRE42215EDisplay device having a connection area outside the display areaSEIKO EPSON CORP·Filed 2009·Granted Mar 15, 2011·16 cites·26 claims
- 1094US10884244B2Display apparatusSEIKO EPSON CORP·Filed 2018·Granted Jan 5, 2021·10 cites·7 claims
- 1194USRE44902EDisplay device having a connection area outside the display areaKOBAYASHI HIDEKAZU·Filed 2012·Granted May 20, 2014·8 cites·36 claims
- 1294US7205964B1Light source and display deviceSEIKO EPSON CORP·Filed 2000·Granted Apr 17, 2007·110 cites·8 claims
- 1393US11619818B2Light flux diameter expanding element and image display deviceSEIKO EPSON CORP·Filed 2021·Granted Apr 4, 2023·2 cites·12 claims
- 1492US9720236B2Optical element, electro-optical device, and mounted display apparatusSEIKO EPSON CORP·Filed 2015·Granted Aug 1, 2017·9 cites·15 claims
- 1592USRE45556EDisplay device having a connection area outside the display areaSEIKO EPSON CORP·Filed 2013·Granted Jun 9, 2015·6 cites·33 claims
- 1691US10025009B2Optical device and image display apparatusSEIKO EPSON CORP·Filed 2014·Granted Jul 17, 2018·13 cites·12 claims
- 1791US9568730B2Optical device including diffraction elements for diffracting light inside of a light guide, image projecting apparatus, and electronic deviceSEIKO EPSON CORP·Filed 2015·Granted Feb 14, 2017·9 cites·18 claims
- 1890US6882379B1Light source device including a planar light source having a single, substantially continuous light emission area and display device incorporating the light source deviceSEIKO EPSON CORP·Filed 1999·Granted Apr 19, 2005·87 cites·43 claims
- 1990US6628067B2Organic electroluminescent white light source and method for manufacturing the sameSEIKO EPSON CORP·Filed 2001·Granted Sep 30, 2003·63 cites·18 claims
- 2089US10139630B2Image display device with optical systems to guide light to a pupilSEIKO EPSON CORP·Filed 2015·Granted Nov 27, 2018·6 cites·5 claims
- 2188US10989925B2Light flux diameter expanding element and image display deviceSEIKO EPSON CORP·Filed 2019·Granted Apr 27, 2021·3 cites·13 claims
- 2287US8399353B2Methods of forming copper wiring and copper film, and film forming systemISHIZAKA TADAHIRO·Filed 2011·Granted Mar 19, 2013·9 cites·13 claims
- 2387US6805448B2Projector display comprising light source unitsSEIKO EPSON CORP·Filed 2003·Granted Oct 19, 2004·35 cites·16 claims
- 2487US6247826B1Illumination device and bulletin board deviceSEIKO EPSON CORP·Filed 1998·Granted Jun 19, 2001·75 cites·28 claims
- 2586US11626290B2Method, device, and system for etching silicon oxide filmTOKYO ELECTRON LTD·Filed 2021·Granted Apr 11, 2023·1 cites·8 claims
- 2686US7038377B2Display device with a narrow frameSEIKO EPSON CORP·Filed 2003·Granted May 2, 2006·28 cites·29 claims
- 2786US6607277B2Projector display comprising light source unitsSEIKO EPSON CORP·Filed 1997·Granted Aug 19, 2003·61 cites·37 claims
- 2886US6355902B2Plasma film forming method and plasma film forming apparatusTOKYO ELECTRON LTD·Filed 2001·Granted Mar 12, 2002·23 cites·6 claims
- 2985US6585379B2Projector and method of manufacturing a light modulation deviceSEIKO EPSON CORP·Filed 2002·Granted Jul 1, 2003·28 cites·12 claims
- 3085US6215087B1Plasma film forming method and plasma film forming apparatusTOKYO ELECTRON LTD·Filed 1997·Granted Apr 10, 2001·57 cites·7 claims
- 3184US9541757B2Light flux diameter-expanding element and display apparatusSEIKO EPSON CORP·Filed 2015·Granted Jan 10, 2017·4 cites·20 claims
- 3284US2025031517A1Display device and electronic apparatusSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 3383US9651778B2Light flux diameter enlarging element and display deviceSEIKO EPSON CORP·Filed 2016·Granted May 16, 2017·4 cites·12 claims
- 3482US6671014B2Liquid projection device having a liquid crystal display element that includes an electroluminescent elementSEIKO EPSON CORP·Filed 2001·Granted Dec 30, 2003·25 cites·1 claims
- 3581US5479220AEyeglass lensSEIKO EPSON CORP·Filed 1992·Granted Dec 26, 1995·65 cites·11 claims
- 3680US12222509B2Light flux diameter expanding element and image display deviceSEIKO EPSON CORP·Filed 2023·Granted Feb 11, 2025·0 cites·17 claims
- 3780US8029873B2Film deposition method and film deposition apparatus of metal filmTOKYO ELECTRON LTD·Filed 2006·Granted Oct 4, 2011·7 cites·9 claims
- 3879US8026176B2Film forming method, plasma film forming apparatus and storage mediumTOKYO ELECTRON LTD·Filed 2007·Granted Sep 27, 2011·6 cites·12 claims
- 3978US12144200B2Display device having lens and light-transmitting layer, and electronic apparatusSEIKO EPSON CORP·Filed 2022·Granted Nov 12, 2024·0 cites·13 claims
- 4078US7126652B2Light source device including a planar light source having a single, substantially continuous light emission area and display device incorporating the light source deviceSEIKO EPSON CORP·Filed 2005·Granted Oct 24, 2006·7 cites·20 claims
- 4178US6094294AOptical modulator device, display and electronic apparatusSEIKO EPSON CORP·Filed 1997·Granted Jul 25, 2000·58 cites·49 claims
- 4277US10739601B2Image display device having maximum emission angle of first image light smaller than maximum viewing angle of virtual imageSEIKO EPSON CORP·Filed 2016·Granted Aug 11, 2020·2 cites·16 claims
- 4377USRE47817EDisplay device with a narrow frameEL TECH FUSION GODO KAISHA·Filed 2015·Granted Jan 14, 2020·2 cites·24 claims
- 4477US7352582B2Reinforcing structure, display device, and electronic apparatusSEIKO EPSON CORP·Filed 2004·Granted Apr 1, 2008·22 cites·15 claims
- 4575US6626551B2Lighting device, and electronic device using the sameSEIKO EPSON CORP·Filed 2001·Granted Sep 30, 2003·16 cites·3 claims
- 4673US10495883B2Image display device with optical systems to guide light to a pupilSEIKO EPSON CORP·Filed 2018·Granted Dec 3, 2019·1 cites·20 claims
- 4773US8859422B2Method of forming copper wiring and method and system for forming copper filmISHIZAKA TADAHIRO·Filed 2012·Granted Oct 14, 2014·3 cites·26 claims
- 4872US9425093B2Copper wiring forming method, film forming system, and storage mediumTOKYO ELECTRON LTD·Filed 2014·Granted Aug 23, 2016·2 cites·11 claims
- 4972US7718453B2Organic electroluminescent device, method of manufacturing the same, and electronic apparatusSEIKO EPSON CORP·Filed 2007·Granted May 18, 2010·2 cites·12 claims
- 5071US7253433B2Organic electroluminescent device, method of manufacturing the same, and electronic apparatusSEIKO EPSON CORP·Filed 2001·Granted Aug 7, 2007·12 cites·17 claims
Showing the top 50 of 122 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →