Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10045133 | Variable sound attenuator with hearing aid | Ralph T. Campagna | 2018-08-07 |
| 9521480 | Variable noise attenuator with adjustable attenuation | Ralph T. Campagna | 2016-12-13 |
| 9333116 | Variable sound attenuator | Ralph T. Campagna | 2016-05-10 |
| 8483419 | Open ear hearing aid system | — | 2013-07-09 |
| 7751580 | Open ear hearing aid system | — | 2010-07-06 |
| 7720245 | Hearing aid system | Oleg Shikhman, Ralph T. Campagna | 2010-05-18 |
| 7421086 | Hearing aid system | Oleg Shikhman, Ralph T. Campagna | 2008-09-02 |
| 7076076 | Hearing aid system | — | 2006-07-11 |
| 6048305 | Apparatus and method for an open ear auditory pathway stimulator to manage tinnitus and hyperacusis | Roger P. Juneau | 2000-04-11 |
| 5982908 | Ear wax collection device for a hearing aid | — | 1999-11-09 |