Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11786408 | Push-in earplug and method of making the same using a mandrel | Robert C. Coffin, James D. Brown | 2023-10-17 |
| 11707210 | Acoustically probed over-the-ear hearing assessment devices and methods | James D. Brown, Michael G. Wurm | 2023-07-25 |
| 11304851 | Push-to-fit earplug with tip cavity | Robert C. Coffin, Matthew V. Stonebraker, Jr., Jeff L. Hamer, Kenneth F. Teeters, Ravi Thomas | 2022-04-19 |
| D895901 | Hearing protector | Robert C. Coffin, Matthew V. Stonebraker, Jr., Ravi Thomas | 2020-09-08 |
| D889754 | Hearing protector | Robert C. Coffin, Matthew V. Stonebraker, Jr., Ravi Thomas | 2020-07-07 |
| 10617333 | Acoustically probed over-the-ear hearing assessment devices and methods | James D. Brown, Michael G. Wurm | 2020-04-14 |
| 10441472 | Selective attenuating earplug | — | 2019-10-15 |
| 10052234 | Hearing protection device with convoluted acoustic horn | — | 2018-08-21 |
| D816067 | Push to talk handheld device having a stepped body for buttons | Ravi Thomas, Gregory G. Tamer | 2018-04-24 |
| D806688 | Push to talk handheld device having a curvature near the body and cable connection | Ravi Thomas, Gregory G. Tamer | 2018-01-02 |
| D802555 | Hearing device tether acoustic decoupling section | — | 2017-11-14 |
| 9814625 | Selective attenuating earplug | — | 2017-11-14 |
| 9445177 | Hearing device tether with acoustic decoupling section | — | 2016-09-13 |
| D755760 | Push to talk handheld device with body scallops around buttons | Ravi Thomas, Mark A. Yoder | 2016-05-10 |
| D754324 | Hearing device retainer | — | 2016-04-19 |
| D754323 | Hearing device retainer | — | 2016-04-19 |
| D733676 | Hearing device tether acoustic decoupling section | — | 2015-07-07 |
| D733865 | Earplug switch | — | 2015-07-07 |