Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12144417 | Furniture with acoustical treatments | Jeffrey S. Madison | 2024-11-19 |
| 10586525 | Array of acoustical returner devices to reflect sound back in the incident direction | Jeffrey S. Madison | 2020-03-10 |
| 10512888 | Multiple identification point automated parameter assurance method | Dean Pighin, Richard Krmit Bergs, Donald Robert Beers | 2019-12-24 |
| 10490179 | Combined diffuser-absorber with spaced slats | Jeffrey S. Madison | 2019-11-26 |
| 10475436 | Hexagonal 2-dimensional reflection phase grating diffuser | Wesley Dean Lachot | 2019-11-12 |
| 10068563 | Sound absorbing panel with wedge-shaped cross-section micro-slits | Jeff Madison | 2018-09-04 |
| 9508334 | Acoustical treatment with transition from absorption to diffusion and method of making | — | 2016-11-29 |
| 8967823 | Combination light diffuser and acoustical treatment and listening room including such fixtures | — | 2015-03-03 |
| 7428948 | Hybrid amplitude-phase grating diffusers | Trevor Cox | 2008-09-30 |
| 7322441 | Extended bandwidth folded well diffusor | Trevor Cox | 2008-01-29 |
| 6772859 | Embodiments of aperiodic tiling of a single asymmetric diffusive base shape | Trevor Cox | 2004-08-10 |
| 6431312 | Motorized and computer operated variable acoustics treatment | — | 2002-08-13 |
| 6112852 | Acoustical treatments with diffusive and absorptive properties and process of design | Trevor Cox | 2000-09-05 |
| 5817992 | Planar binary amplitude diffusor | — | 1998-10-06 |
| 5787656 | Acoustical seating risers for indoor arenas | — | 1998-08-04 |
| 5665943 | Nestable sound absorbing foam with reduced area of attachment | — | 1997-09-09 |
| 5401921 | Two-dimensional primitive root diffusor | John H. Konnert | 1995-03-28 |
| 5226267 | Acoustical diffusing and absorbing cinder blocks | John H. Konnert, Jorge Pardo | 1993-07-13 |
| 5193318 | Acoustical diffusing and absorbing cinder blocks | John H. Konnert | 1993-03-16 |
| 5168129 | Variable acoustics modular performance shell | — | 1992-12-01 |
| 5027920 | Cinder block modular diffusor | John H. Konnert | 1991-07-02 |
| 4964486 | Cinder block modular diffusor | John H. Konnert | 1990-10-23 |
| D306764 | Acoustical baffle | John H. Konnert | 1990-03-20 |
| 4821839 | Sound absorbing diffusor | John H. Konnert | 1989-04-18 |
| D291601 | Acoustical baffle | John H. Konnert | 1987-08-25 |