Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11044553 | Two-way quasi point-source wide-dispersion speaker | — | 2021-06-22 |
| 9191746 | Loudspeaker driver with dual electromagnet assemblies | — | 2015-11-17 |
| 8917881 | Enclosure-less loudspeaker system | — | 2014-12-23 |
| 8249268 | Woofer-less and enclosure-less loudspeaker system | — | 2012-08-21 |
| 4446070 | Catalytic oxidation of polynuclear aromatic hydrocarbons | Derk T. A. Huibers | 1984-05-01 |
| 4431850 | Low temperature hydrodealkylation of alkylated phenols | Derk T. A. Huibers | 1984-02-14 |
| 4359592 | Multi-stage, adsorption process for separating organic liquids from water | James C. Chao | 1982-11-16 |
| 4278702 | Method of making printed circuit board by induction heating of the conductive metal particles on a plastic substrate | — | 1981-07-14 |