Inventor · disambiguated record
William J. Ballad
Also filed as: BALLAD WILLIAM J
5 granted patents·1 pending application·167 citations·filing 1992–2015
83Inventor score
Top patents by PatentIndex Score
6 records- 0196US7477756B2Isolating deep canal fitting earphoneKNOWLES ELECTRONICS LLC·Filed 2006·Granted Jan 13, 2009·97 cites·11 claims
- 0284US9078064B2Earphone assembly with moisture resistanceKNOWLES ELECTRONICS LLC·Filed 2013·Granted Jul 7, 2015·8 cites·4 claims
- 0383US8532323B2Earphone assembly with moisture resistanceWICKSTROM TIMOTHY K·Filed 2011·Granted Sep 10, 2013·9 cites·6 claims
- 0478US9451349B2Earphone assembly with moisture resistanceKNOWLES ELECTRONICS LLC·Filed 2015·Granted Sep 20, 2016·3 cites·21 claims
- 0571US5335286AElectret assemblyKNOWLES ELECTRONICS INC·Filed 1992·Granted Aug 2, 1994·50 cites·11 claims
- 0641US2008101640A1Electroacoustic system and method of manufacturing thereofKNOWLES ELECTRONICS LLC·Filed 2006·Application pending·0 cites
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