Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11589149 | Acoustic device | Ray Scott Wakeland | 2023-02-21 |
| 11095966 | Acoustic device | Ray Scott Wakeland | 2021-08-17 |
| 10609465 | Acoustic device | Ray Scott Wakeland | 2020-03-31 |
| 10154347 | Bushings constrained by compression in levered apparatus | Brian Lucas, Weidong Zhu, Binu K. Oommen, Brock N. Jacobites, Joseph A. Stabile +2 more | 2018-12-11 |
| 10104721 | Induction cookware | Raymond O. England, David W. Beverly | 2018-10-16 |
| 9049501 | Audio system with synthesized positive impedance | Kenneth B. Delpapa, Michael B. Nussbaum, Jay N. Teixeira, George Nichols | 2015-06-02 |
| 8796598 | Induction cookware | Raymond O. England, David W. Beverly | 2014-08-05 |
| 8224009 | Audio system with synthesized positive impedance | Kenneth B. Delpapa, Michael B. Nussbaum, Jay N. Teixeira, George Nichols | 2012-07-17 |
| 8139804 | Electroacoustic transducing with a bridge phase plug | John H. Wendell, Christopher B. Ickler | 2012-03-20 |
| 7965010 | Linear motor with patterned magnet arrays | Stephen J. Maguire, Mark A. Hayner, Richard Tucker Carlmark, Rajiv Suri | 2011-06-21 |
| 7623670 | Waveguide electroacoustical transducing | Jeffrey Hoefler, John H. Wendell, Robert Preston Parker, William P. Schreiber | 2009-11-24 |
| 7252053 | Electromagnetic actuator and control | Roger Mark, Thomas C. Schroeder, Richard Tucker Carlmark, David E. Hanson, Jun Ma +1 more | 2007-08-07 |
| 7128032 | Electromagnetic actuator and control | Roger Mark, Thomas C. Schroeder, Richard Tucker Carlmark, David E. Hanson, Jun Ma +1 more | 2006-10-31 |
| 6771787 | Waveguide electroacoustical transducing | Jeffrey Hoefler, John H. Wendell, Robert Preston Parker, William P. Schreiber | 2004-08-03 |
| 5701039 | Electromechanical transducing | James A. Parison, Robert L. Maresca | 1997-12-23 |
| 5574445 | Digital absolute position encoders | Robert L. Maresca, James A. Parison, John J. Breen, Christopher H. Perry | 1996-11-12 |
| 5345165 | Frequency-stabilized two-state modulation using hysteresis control | — | 1994-09-06 |
| 5216723 | Permanent magnet transducing | Ricardo F. Carreras | 1993-06-01 |
| 5025885 | Multiple chamber loudspeaker system | — | 1991-06-25 |
| 4981309 | Electromechanical transducing along a path | Robert L. Maresca, James A. Parison | 1991-01-01 |
| RE31679 | Loudspeaker enclosure with acoustical compliance resonating with port mass at frequency below system resonance | William P. Schreiber | 1984-09-18 |
| 4456872 | Current controlled two-state modulation | — | 1984-06-26 |