Issued Patents All Time
Showing 25 most recent of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10966868 | Hearing protector with curved segments | — | 2021-04-06 |
| 10034798 | Hearing protector with curved segments | — | 2018-07-31 |
| 8656927 | Earplug | Jeffrey L. Hamer | 2014-02-25 |
| 8596279 | Offset stem for earplug and earplug formed therewith | — | 2013-12-03 |
| 8297287 | Flanged earplug | — | 2012-10-30 |
| 8291911 | Earplug | Jeffrey L. Hamer | 2012-10-23 |
| D658282 | Earplug tip | — | 2012-04-24 |
| D651302 | Earplug | — | 2011-12-27 |
| D641465 | Earplug stem | — | 2011-07-12 |
| D633196 | Earplug tip | — | 2011-02-22 |
| D623286 | Earplug stem | — | 2010-09-07 |
| D622837 | Earplug tip | — | 2010-08-31 |
| D621030 | Earplug stem | — | 2010-08-03 |
| 7743771 | Earplug with articulating stem and locking features | — | 2010-06-29 |
| 7731487 | Mold for forming a hearing protective device | Richard Knauer, Alan R. Seville, James Hall | 2010-06-08 |
| D616979 | Earplug | — | 2010-06-01 |
| 7727433 | Hearing protective device and method of making the same | Richard Knauer, Alan R. Seville, James Hall | 2010-06-01 |
| 7537011 | Hearing protection device | — | 2009-05-26 |
| 7464786 | High sound attenuating hearing protection device | Richard Knauer, Alan R. Seville | 2008-12-16 |
| D578639 | Earplug stem | — | 2008-10-14 |
| D578638 | Earplug | — | 2008-10-14 |
| D578637 | Earplug | — | 2008-10-14 |
| 7314047 | Hearing protection device | — | 2008-01-01 |
| D550655 | Earplug stem | — | 2007-09-11 |
| 6920956 | Detectable earplug and method of manufacture thereof | — | 2005-07-26 |