Marissen; Roelof A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Marissen; Roelof A..The latest application filed is for "electret assembly for a microphone having a backplate with improved charge stability".
- Marissen; Roelof A. - The Hague NL
- Marissen; Roelof A. - Den Haag NL
| Patent | Date |
|---|---|
| Electret assembly for a microphone having a backplate with improved charge stability Grant 8,280,082 - van Halteren , et al. October 2, 2 | 2012-10-02 |
| Electret Assembly For A Microphone Having A Backplate With Improved Charge Stability App 20100172521 - van Halteren; Aart Z. ; et al. | 2010-07-08 |
| Electret assembly for a microphone having a backplate with improved charge stability Grant 7,684,575 - van Halteren , et al. March 23, 2 | 2010-03-23 |
| Electret assembly for a microphone having a backplate with improved charge stability App 20070121982 - van Halteren; Aart Z. ; et al. | 2007-05-31 |
| Electret assembly for a microphone having a backplate with improved charge stability Grant 7,136,496 - van Halteren , et al. November 14, 2 | 2006-11-14 |
| Electret assembly for a microphone having a backplate with improved charge stability App 20030076970 - van Halteren, Aart Z. ; et al. | 2003-04-24 |
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