Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11541829 | Acoustical baffle | — | 2023-01-03 |
| 11104098 | Fibrous vehicle underbody shield | Robert J. Zander, Kenneth Ritzema | 2021-08-31 |
| 9908485 | Acoustic barrier assembly with acoustic seal | James Check, Kenneth Ritzema | 2018-03-06 |
| 9747883 | Acoustic insulator mat with liquid applied sprayable coating and method for making the same | Kenneth Ritzema | 2017-08-29 |
| 9139142 | Three-layer acoustic insulator | James Check | 2015-09-22 |