Assignee
OPTREL AG
CH·20 granted patents·4 pending applications·530 citations·filing 1988–2015
Top patents by PatentIndex Score
24 records- 0187US6675800B2Emergency flight safety deviceOPTREL AG·Filed 2001·Granted Jan 13, 2004·58 cites·10 claims
- 0283USD365666SWelding helmetOPTREL AG·Filed 1993·Granted Dec 26, 1995·45 cites·1 claims
- 0381USD310276SWelding maskOPTREL AG·Filed 1988·Granted Aug 28, 1990·26 cites·1 claims
- 0480US5571217AProtective assembly for the protection of the human headOPTREL AG·Filed 1993·Granted Nov 5, 1996·93 cites·22 claims
- 0579US9610198B2Protection device for a welderOPTREL AG·Filed 2015·Granted Apr 4, 2017·7 cites·19 claims
- 0675USRE45677EAnti-glare protection deviceOPTREL AG·Filed 2013·Granted Sep 29, 2015·4 cites·32 claims
- 0769US10736782B2Face protectorOPTREL AG·Filed 2014·Granted Aug 11, 2020·5 cites·20 claims
- 0868US4863244AElectro-optic welding lens assemblyOPTREL AG·Filed 1988·Granted Sep 5, 1989·98 cites·10 claims
- 0965US5793449AProtective deviceOPTREL AG·Filed 1997·Granted Aug 11, 1998·33 cites·17 claims
- 1064US6887531B2Glare protection deviceOPTREL AG·Filed 2002·Granted May 3, 2005·9 cites·16 claims
- 1159USD316164SHolder for face visor, hearing protector and similar equipmentOPTREL AG·Filed 1988·Granted Apr 9, 1991·11 cites·1 claims
- 1258US7161116B2Welding protective mask with illumination equipmentOPTREL AG·Filed 2004·Granted Jan 9, 2007·23 cites·11 claims
- 1357US7800034B2Dazzle protection unit for a portable dazzle protection device including a light capturing element guiding light to at least one sensorOPTREL AG·Filed 2007·Granted Sep 21, 2010·2 cites·18 claims
- 1456US6796652B1Glare-protection device with a screened evaluation circuitOPTREL AG·Filed 2000·Granted Sep 28, 2004·14 cites·12 claims
- 1551US6941577B2Antiglare device for welding protective masksOPTREL AG·Filed 2001·Granted Sep 13, 2005·10 cites·19 claims
- 1648US10098788B2Electro-optical glare-protection filter with a liquid crystal cell being a fringe-field switching cell for a welder protection deviceOPTREL AG·Filed 2015·Granted Oct 16, 2018·0 cites·21 claims
- 1744US6891681B2Anti-glare protection deviceOPTREL AG·Filed 2001·Granted May 10, 2005·13 cites·5 claims
- 1843US2014320771A1Device and method for dazzle protectionOPTREL AG·Filed 2014·Application pending·0 cites
- 1943US2015033430A1Face protector for welderOPTREL AG·Filed 2013·Application pending·0 cites
- 2041US6270223B1Active electro-optical filter device and glare-protection deviceOPTREL AG·Filed 1998·Granted Aug 7, 2001·39 cites·23 claims
- 2141US5510609AElectrically controllable optical filter elementOPTREL AG·Filed 1994·Granted Apr 23, 1996·30 cites·9 claims
- 2241US2011185480A1Welder protection maskOPTREL AG·Filed 2011·Application pending·0 cites
- 2337US2007195227A1Glare protection deviceOPTREL AG·Filed 2007·Application pending·0 cites
- 2427US5854667AElectrooptical filter cartridge and a method for manufacturing the sameOPTREL AG·Filed 1997·Granted Dec 29, 1998·10 cites·15 claims
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