Inventor · disambiguated record
Ervin Goldfain
Also filed as: GOLDFAIN ERVIN
67 granted patents·8 pending applications·1,411 citations·filing 1994–2021
99Inventor score
Files withWELCH ALLYN INC60GOLDFAIN ERVIN4ANDREASSEN ERIC M2INTEGRA LIFESCIENCES CORP2DANNA DOMINICK1
Top patents by PatentIndex Score
75 records- 0199US9931028B2Replacement light assemblyWELCH ALLYN INC·Filed 2017·Granted Apr 3, 2018·37 cites·20 claims
- 0298US10028648B2Borescopic optical system for medical diagnostic instruments and medical diagnostic instruments having interlocking assembly featuresWELCH ALLYN INC·Filed 2017·Granted Jul 24, 2018·40 cites·19 claims
- 0396US10253964B2Wearable headlight devices and related methodsINTEGRA LIFESCIENCES CORP·Filed 2016·Granted Apr 9, 2019·25 cites·20 claims
- 0496US9757031B2Ophthalmoscope deviceWELCH ALLYN INC·Filed 2015·Granted Sep 12, 2017·29 cites·19 claims
- 0595US10238462B2Digital-based medical devicesWELCH ALLYN INC·Filed 2017·Granted Mar 26, 2019·38 cites·20 claims
- 0695US9814377B2Medical instrument having LED illumination systemWELCH ALLYN INC·Filed 2015·Granted Nov 14, 2017·38 cites·17 claims
- 0795US9001326B2Method and apparatus for observing subsurfaces of a target materialGOLDFAIN ERVIN·Filed 2011·Granted Apr 7, 2015·19 cites·30 claims
- 0894US9636004B2Replacement light assemblyWELCH ALLYN INC·Filed 2015·Granted May 2, 2017·10 cites·20 claims
- 0993US11653848B2Vital sign detection and measurementWELCH ALLYN INC·Filed 2020·Granted May 23, 2023·4 cites·17 claims
- 1093US10159409B2Opthalmoscope deviceWELCH ALLYN INC·Filed 2017·Granted Dec 25, 2018·12 cites·20 claims
- 1193US9237847B2Ophthalmoscope deviceWELCH ALLYN INC·Filed 2014·Granted Jan 19, 2016·40 cites·19 claims
- 1291US10335029B2Opthalmoscope deviceWELCH ALLYN INC·Filed 2018·Granted Jul 2, 2019·8 cites·7 claims
- 1391US10136804B2Automatic fundus image capture systemWELCH ALLYN INC·Filed 2016·Granted Nov 27, 2018·14 cites·16 claims
- 1491US10028649B2Digital colposcope systemWELCH ALLYN INC·Filed 2014·Granted Jul 24, 2018·46 cites·8 claims
- 1591US8157728B2Vaginal speculumDANNA DOMINICK·Filed 2006·Granted Apr 17, 2012·74 cites·42 claims
- 1690US8459844B2Replacement light assemblyLIA RAYMOND A·Filed 2010·Granted Jun 11, 2013·37 cites·25 claims
- 1789US8944596B2Digital-based medical devicesWELCH ALLYN INC·Filed 2012·Granted Feb 3, 2015·25 cites·28 claims
- 1888US9400101B2Wearable headlight devices and related methodsINTEGRA LIFESCIENCES CORP·Filed 2014·Granted Jul 26, 2016·26 cites·27 claims
- 1988US9182343B2Method and apparatus for observing subsurfaces of a target materialWELCH ALLYN INC·Filed 2015·Granted Nov 10, 2015·3 cites·20 claims
- 2087US8899774B2Wearable headlight devices and related methodsSTRONG JAMES·Filed 2011·Granted Dec 2, 2014·37 cites·32 claims
- 2187US6390625B1Focusing mechanismWELCH ALLYN INC·Filed 2001·Granted May 21, 2002·195 cites·35 claims
- 2287USD379514SCompact telescoping retinoscopeWELCH ALLYN INC·Filed 1994·Granted May 27, 1997·31 cites·1 claims
- 2386US7784940B2Eye viewing device comprising video capture opticsWELCH ALLYN INC·Filed 2007·Granted Aug 31, 2010·28 cites·10 claims
- 2485US11096627B2Medical examination system enabling interchangeable instrument operating modesWELCH ALLYN INC·Filed 2017·Granted Aug 24, 2021·5 cites·15 claims
- 2585US8816599B2Examination light apparatus with touch-less controlWOOD ROBERT J·Filed 2009·Granted Aug 26, 2014·16 cites·15 claims
- 2685US8066634B2Digital otoscopeANDREASSEN ERIC M·Filed 2007·Granted Nov 29, 2011·29 cites·19 claims
- 2785US7618159B2Vented iris control for luminaireWELCH ALLYN INC·Filed 2007·Granted Nov 17, 2009·23 cites·17 claims
- 2884US9642517B2Digital-based medical devicesWELCH ALLYN INC·Filed 2015·Granted May 9, 2017·4 cites·20 claims
- 2982US9198566B2Replacement light assemblyWELCH ALLYN INC·Filed 2013·Granted Dec 1, 2015·10 cites·23 claims
- 3079US7364297B2Digital documenting ophthalmoscopeWELCH ALLYN INC·Filed 2004·Granted Apr 29, 2008·109 cites·13 claims
- 3178US8543192B2Method and apparatus for analyzing subsurfaces of a target materialGOLDFAIN ERVIN·Filed 2011·Granted Sep 24, 2013·4 cites·22 claims
- 3278US7553020B2Medical diagnostic instrument with variable focus liquid lensWELCH ALLYN INC·Filed 2006·Granted Jun 30, 2009·18 cites·17 claims
- 3377US10674907B2Opthalmoscope deviceWELCH ALLYN INC·Filed 2019·Granted Jun 9, 2020·1 cites·18 claims
- 3476US11805990B2Digital otoscopeWELCH ALLYN INC·Filed 2021·Granted Nov 7, 2023·0 cites·15 claims
- 3576US7803110B2Veterinary otoscopeWELCH ALLYN INC·Filed 2006·Granted Sep 28, 2010·21 cites·8 claims
- 3675US11553981B2Digital-based medical devicesWELCH ALLYN INC·Filed 2019·Granted Jan 17, 2023·1 cites·17 claims
- 3775US9014792B2Method and apparatus for analyzing subsurfaces of a target materialWELCH ALLYN INC·Filed 2013·Granted Apr 21, 2015·5 cites·19 claims
- 3874US8469882B2Digital otoscopeANDREASSEN ERIC M·Filed 2011·Granted Jun 25, 2013·5 cites·7 claims
- 3972US10966600B2Digital otoscopeWELCH ALLYN INC·Filed 2020·Granted Apr 6, 2021·0 cites·17 claims
- 4071US9675246B2Borescopic optical system for medical diagnostic instruments and medical diagnostic instruments having interlocking assembly featuresWELCH ALLYN INC·Filed 2015·Granted Jun 13, 2017·1 cites·20 claims
- 4169US11457802B2Borescopic optical system for medical diagnostic instruments and medical diagnostic instruments having interlocking assembly featuresWELCH ALLYN INC·Filed 2020·Granted Oct 4, 2022·0 cites·17 claims
- 4269US11071446B2Digital otoscopeWELCH ALLYN INC·Filed 2019·Granted Jul 27, 2021·0 cites·20 claims
- 4369US7399275B2OtoscopeWELCH ALLYN INC·Filed 2004·Granted Jul 15, 2008·51 cites·34 claims
- 4468US10758119B2Automatic fundus image capture systemWELCH ALLYN INC·Filed 2018·Granted Sep 1, 2020·1 cites·19 claims
- 4566US11246482B2Visual acuity examinationWELCH ALLYN INC·Filed 2018·Granted Feb 15, 2022·1 cites·15 claims
- 4665US10213098B2Laser configured otoscopeWELCH ALLYN INC·Filed 2014·Granted Feb 26, 2019·1 cites·14 claims
- 4765US10078226B2Portable eye viewing device enabled for enhanced field of viewWELCH ALLYN INC·Filed 2014·Granted Sep 18, 2018·2 cites·9 claims
- 4865US9967936B2Examination light apparatus with touch-less controlWELCH ALLYN INC·Filed 2014·Granted May 8, 2018·1 cites·9 claims
- 4965US9474441B2Digital otoscopeWELCH ALLYN INC·Filed 2013·Granted Oct 25, 2016·1 cites·19 claims
- 5065USD598545SDigital otoscopeWELCH ALLYN INC·Filed 2007·Granted Aug 18, 2009·14 cites·1 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →