Beltone Electronics Corporation
41Patents
0Active
41Granted
36Portfolio score
Filing activity: Jan 30, 1978 → Dec 29, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5185802A | Modular hearing aid system | Electricity | 248 | Expired |
| US5991419A | Bilateral signal processing prosthesis | Electricity | 115 | Expired |
| US6393130B1 | Deformable, multi-material hearing aid housing | Electricity | 115 | Expired |
| US4972488A | Ear wax barrier and acoustic attenuator for a hearing aid | Electricity | 99 | Expired |
| US7130437B2 | Compressible hearing aid | Electricity | 96 | Expired |
| US4870689A | Ear wax barrier for a hearing aid | Electricity | 62 | Expired |
| US5014016A | Switching amplifier | Electricity | 60 | Expired |
| US4729451A | Receiver suspension and acoustic porting system | Electricity | 35 | Expired |
| US4792977A | Hearing aid circuit | Electricity | 33 | Expired |
| US5864628A | Press-fit sound damping structure | Electricity | 33 | Expired |
| US4569812A | Process for making a hearing aid vent | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5170434A | Hearing aid with improved noise discrimination | Electricity | 27 | Expired |
| US5970157A | Press-fit ear wax barrier | Electricity | 25 | Expired |
| US4926139A | Electronic frequency filter | Electricity | 23 | Expired |
| US4860890A | Battery holder | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6167141A | Multimaterial hearing aid housing | Electricity | 21 | Expired |
| US4912393A | Voltage regulator with variable reference outputs for a hearing aid | Electricity | 20 | Expired |
| US4952867A | Base bias current compensator | Electricity | 19 | Expired |
| US4451709A | Eye glass hearing aids | Electricity | 17 | Expired |
| US4922131A | Differential voltage threshold detector | Electricity | 16 | Expired |
| US4543453A | Electronic hearing aid control circuit | Electricity | 15 | Expired |
| US6292572A | Hearing aids with standardized spheroidal housings | Electricity | 15 | Expired |
| US5712918A | Press-fit ear wax barrier | Electricity | 15 | Expired |
| US4934770A | Electronic compression system | Electricity | 14 | Expired |
| US6097825A | Hearing aids with standardized spheroidal housings | Electricity | 13 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.