Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE48344 | Sleep system | Blair Weiland, Steven Stieglitz, Anthony J. Warncke, Martin J. Krause, Jr., Joel D. Alberda | 2020-12-08 |
| 9314104 | Sleep system mechanism | Steven Stieglitz, Joel D. Alberda, Martin J. Krause, Jr. | 2016-04-19 |
| 9125496 | Sleep system | Blair Wieland, Steven Stieglitz, Anthony J. Warncke, Martin J. Krause, Jr., Joel D. Alberda | 2015-09-08 |
| 9027178 | Sleep system | Blair Wieland, Steven Stieglitz, Anthony J. Warncke, Martin J. Krause, Jr., Joel D. Alberda | 2015-05-12 |
| 8899687 | Puzzle seating | Martin J. Krause, Jr., Steven Stieglitz | 2014-12-02 |
| 6595592 | Article of furniture | Roy M. Wieland, Joel D. Alberda | 2003-07-22 |
| 5904401 | Recliner chair | Joel D. Alberda | 1999-05-18 |