Inventor · disambiguated record
Stephen D. Julstrom
Also filed as: JULSTROM STEPHEN · JULSTROM STEPHEN D · JULSTROM STEPHEN DRAKE
25 granted patents·2 pending applications·1,449 citations·filing 1984–2023
97Inventor score
Top patents by PatentIndex Score
27 records- 0198US7522740B2Multi-coil coupling system for hearing aid applicationsETYMOTIC RES INC·Filed 2006·Granted Apr 21, 2009·100 cites·28 claims
- 0298US4658425AMicrophone actuation control system suitable for teleconference systemsSHURE BROS·Filed 1986·Granted Apr 14, 1987·387 cites·21 claims
- 0397US6694034B2Transmission detection and switch system for hearing improvement applicationsETYMOTIC RES INC·Filed 2000·Granted Feb 17, 2004·194 cites·40 claims
- 0495US8460816B2Rechargeable battery assemblies and methods of constructing rechargeable battery assembliesJULSTROM STEPHEN D·Filed 2009·Granted Jun 11, 2013·54 cites·38 claims
- 0592US8174233B2Magnetically coupled battery charging systemJULSTROM STEPHEN DRAKE·Filed 2009·Granted May 8, 2012·51 cites·37 claims
- 0692US7099486B2Multi-coil coupling system for hearing aid applicationsETYMOTIC RES INC·Filed 2003·Granted Aug 29, 2006·56 cites·15 claims
- 0791US8237402B2Magnetically coupled battery charging systemJULSTROM STEPHEN DRAKE·Filed 2009·Granted Aug 7, 2012·44 cites·28 claims
- 0891US8160261B2Audio monitoring systemSCHULEIN ROBERT B·Filed 2006·Granted Apr 17, 2012·49 cites·49 claims
- 0991US8022775B2Systems and methods for maintaining a drive signal to a resonant circuit at a resonant frequencyETYMOTIC RES INC·Filed 2009·Granted Sep 20, 2011·39 cites·36 claims
- 1090US8649540B2Electronic earplugKILLION MEAD C·Filed 2010·Granted Feb 11, 2014·42 cites·50 claims
- 1190US8174234B2Magnetically coupled battery charging systemJULSTROM STEPHEN DRAKE·Filed 2009·Granted May 8, 2012·42 cites·30 claims
- 1289US4712231ATeleconference systemSHURE BROS·Filed 1984·Granted Dec 8, 1987·66 cites·27 claims
- 1387US4696036ADirectional enhancement circuitSHURE BROS·Filed 1985·Granted Sep 22, 1987·56 cites·20 claims
- 1477US9232292B2Electronic earplug windscreenETYMOTIC RES INC·Filed 2014·Granted Jan 5, 2016·4 cites·21 claims
- 1577US5297210AMicrophone actuation control systemSHURE BROS·Filed 1992·Granted Mar 22, 1994·74 cites·14 claims
- 1675US9859990B2Telecoil hum filterETYMOTIC RES INC·Filed 2016·Granted Jan 2, 2018·2 cites·19 claims
- 1773US5673327AMicrophone mixerFiled 1996·Granted Sep 30, 1997·81 cites·15 claims
- 1870US4991166AEcho reduction circuitSHURE BROS·Filed 1988·Granted Feb 5, 1991·30 cites·10 claims
- 1963US6560344B1Miniature surface mounted directional microphone assemblyETYMOTIC RES INC·Filed 1999·Granted May 6, 2003·35 cites·47 claims
- 2060US11095965B2System and method for reducing wind noise in an electronic hearing protectorETYMOTIC RES INC·Filed 2020·Granted Aug 17, 2021·0 cites·10 claims
- 2158US7110553B1Directional microphone assembly for mounting behind a surfaceETYMOTIC RES INC·Filed 1998·Granted Sep 19, 2006·29 cites·9 claims
- 2256US10779069B2System and method for reducing wind noise in an electronic hearing protectorETYMOTIC RES INC·Filed 2018·Granted Sep 15, 2020·0 cites·10 claims
- 2355US10476609B2Telecoil hum filterETYMOTIC RES INC·Filed 2017·Granted Nov 12, 2019·0 cites·23 claims
- 2453US4811019ADelta modulation encoding/decoding circuitrySHURE BROTHERS INC INC·Filed 1986·Granted Mar 7, 1989·14 cites·11 claims
- 2546US2024040315A1Hearing assistive devicesMCK AUDIO INC·Filed 2023·Application pending·0 cites
- 2646US2004240692A1Magnetic coupling adaptorFiled 2004·Application pending·0 cites
- 2735US11894819B2Audio monitoring systemSENSAPHONICS INC·Filed 2021·Granted Feb 6, 2024·0 cites·23 claims
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