Assignee
KNOWLES ELECTRONICS INC
US·32 granted patents·2,022 citations·filing 1990–2001
Top patents by PatentIndex Score
32 records- 0199US5870482AMiniature silicon condenser microphoneKNOWLES ELECTRONICS INC·Filed 1997·Granted Feb 9, 1999·408 cites·28 claims
- 0298US5490220ASolid state condenser and microphone devicesKNOWLES ELECTRONICS INC·Filed 1994·Granted Feb 6, 1996·298 cites·22 claims
- 0395US5740261AMiniature silicon condenser microphoneKNOWLES ELECTRONICS INC·Filed 1996·Granted Apr 14, 1998·205 cites·38 claims
- 0486US5960093AMiniature transducerKNOWLES ELECTRONICS INC·Filed 1998·Granted Sep 28, 1999·91 cites·4 claims
- 0585US5193116AHearing and output transducer with self contained amplifierKNOWLES ELECTRONICS INC·Filed 1991·Granted Mar 9, 1993·94 cites·17 claims
- 0683US5337011APre-amplifierKNOWLES ELECTRONICS INC·Filed 1992·Granted Aug 9, 1994·40 cites·11 claims
- 0781US5861779AImpedance circuit for a miniature hearing aidKNOWLES ELECTRONICS INC·Filed 1996·Granted Jan 19, 1999·39 cites·33 claims
- 0879US5692060AUnidirectional microphoneKNOWLES ELECTRONICS INC·Filed 1995·Granted Nov 25, 1997·69 cites·35 claims
- 0977US5222050AWater-resistant transducer housing with hydrophobic ventKNOWLES ELECTRONICS INC·Filed 1992·Granted Jun 22, 1993·92 cites·31 claims
- 1075US6130953AHeadsetKNOWLES ELECTRONICS INC·Filed 1998·Granted Oct 10, 2000·81 cites·12 claims
- 1175USD360949SHearing aid receiverKNOWLES ELECTRONICS INC·Filed 1993·Granted Aug 1, 1995·18 cites·1 claims
- 1275US5068901ADual outlet passage hearing aid transducerKNOWLES ELECTRONICS INC·Filed 1990·Granted Nov 26, 1991·57 cites·14 claims
- 1373US7065220B2Microphone array having a second order directional patternKNOWLES ELECTRONICS INC·Filed 2001·Granted Jun 20, 2006·17 cites·15 claims
- 1471US6028502APotentiometer detentKNOWLES ELECTRONICS INC·Filed 1999·Granted Feb 22, 2000·23 cites·12 claims
- 1571US5335286AElectret assemblyKNOWLES ELECTRONICS INC·Filed 1992·Granted Aug 2, 1994·50 cites·11 claims
- 1669US6041131AShock resistant electroacoustic transducerKNOWLES ELECTRONICS INC·Filed 1997·Granted Mar 21, 2000·44 cites·9 claims
- 1769USD360948SHearing aid receiverKNOWLES ELECTRONICS INC·Filed 1993·Granted Aug 1, 1995·14 cites·1 claims
- 1868US5408534AElectret microphone assembly, and method of manufacturerKNOWLES ELECTRONICS INC·Filed 1992·Granted Apr 18, 1995·51 cites·20 claims
- 1967USD360691SHearing aid receiverKNOWLES ELECTRONICS INC·Filed 1993·Granted Jul 25, 1995·13 cites·1 claims
- 2066US5548658AAcoustic TransducerKNOWLES ELECTRONICS INC·Filed 1994·Granted Aug 20, 1996·46 cites·19 claims
- 2165US5083095APlural source follower amplifierKNOWLES ELECTRONICS INC·Filed 1990·Granted Jan 21, 1992·40 cites·10 claims
- 2263US5101435ACombined microphone and magnetic induction pickup systemKNOWLES ELECTRONICS INC·Filed 1990·Granted Mar 31, 1992·35 cites·17 claims
- 2361US5259035AAutomatic microphone mixerKNOWLES ELECTRONICS INC·Filed 1991·Granted Nov 2, 1993·38 cites·11 claims
- 2458USD414493SMicrophone housingKNOWLES ELECTRONICS INC·Filed 1998·Granted Sep 28, 1999·16 cites·1 claims
- 2558US5446413AImpedance circuit for a miniature hearing aidKNOWLES ELECTRONICS INC·Filed 1994·Granted Aug 29, 1995·26 cites·16 claims
- 2657US6985598B1Programming system for programming hearing aidsKNOWLES ELECTRONICS INC·Filed 1999·Granted Jan 10, 2006·31 cites·20 claims
- 2756US5990425AProgrammable electrical switchKNOWLES ELECTRONICS INC·Filed 1999·Granted Nov 23, 1999·17 cites·10 claims
- 2855US5559892AImpedence buffering MOS circuit with dynamically reduced threshold voltage, as for use in an output buffer of a hearing aid amplifierKNOWLES ELECTRONICS INC·Filed 1994·Granted Sep 24, 1996·15 cites·5 claims
- 2950US5353244AComputer controlled transversal equalizerKNOWLES ELECTRONICS INC·Filed 1993·Granted Oct 4, 1994·10 cites·6 claims
- 3047US6654477B1Receiver and method of constructionKNOWLES ELECTRONICS INC·Filed 1997·Granted Nov 25, 2003·17 cites·3 claims
- 3140US5319717AHearing aid microphone with modified high-frequency responseKNOWLES ELECTRONICS INC·Filed 1992·Granted Jun 7, 1994·24 cites·19 claims
- 3232US5297075AComputer controlled transversal equalizerKNOWLES ELECTRONICS INC·Filed 1992·Granted Mar 22, 1994·3 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when KNOWLES ELECTRONICS INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →