Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12087263 | Underwater acoustic projector transducers | Frank D. Fratantonio | 2024-09-10 |
| 11911793 | Deep submergence bender transduction apparatus | Frank D. Fratantonio, Jethro H. Tannis | 2024-02-27 |
| 10744532 | End driven bender transduction apparatus | Alexander L. Butler | 2020-08-18 |
| 9036029 | Active cloaking with wideband transducers | — | 2015-05-19 |
| 8836792 | Active cloaking with transducers | — | 2014-09-16 |
| 8659211 | Quad and dual cantilever transduction apparatus | Alexander L. Butler | 2014-02-25 |
| 8599648 | Doubly steered acoustic array | Alexander L. Butler | 2013-12-03 |
| 8552625 | Cantilever type acoustic transduction apparatus | Alexander L. Butler | 2013-10-08 |
| 8072843 | Stepped multiply resonant wideband transducer apparatus | Alexander L. Butler | 2011-12-06 |
| 7692363 | Mass loaded dipole transduction apparatus | Alexander L. Butler | 2010-04-06 |
| 7453186 | Cantilever driven transduction apparatus | Alexander L. Butler | 2008-11-18 |
| 7372776 | Modal acoustic array transduction apparatus | Alexander L. Butler | 2008-05-13 |
| 7292503 | Multi piston electro-mechanical transduction apparatus | Alexander L. Butler | 2007-11-06 |
| 6950373 | Multiply resonant wideband transducer apparatus | Alexander L. Butler | 2005-09-27 |
| 6734604 | Multimode synthesized beam transduction apparatus | Alexander L. Butler | 2004-05-11 |
| 6654316 | Single-sided electro-mechanical transduction apparatus | Alexander L. Butler | 2003-11-25 |
| 5184332 | Multiport underwater sound transducer | — | 1993-02-02 |
| 5047683 | Hybrid transducer | Arthur E. Clark | 1991-09-10 |
| 4864548 | Flextensional transducer | — | 1989-09-05 |
| 4845688 | Electro-mechanical transduction apparatus | — | 1989-07-04 |
| 4754441 | Directional flextensional transducer | — | 1988-06-28 |
| 4742499 | Flextensional transducer | — | 1988-05-03 |
| 4642802 | Elimination of magnetic biasing using magnetostrictive materials of opposite strain | William M. Pozzo | 1987-02-10 |
| 4443731 | Hybrid piezoelectric and magnetostrictive acoustic wave transducer | Arthur E. Clark | 1984-04-17 |
| 4438509 | Transducer with tensioned-wire precompression | Thomas R. Egan, Kenneth Rodberg, Arthur E. Clark | 1984-03-20 |