Sprinkle; Charles M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sprinkle; Charles M..The latest application filed is for "thin high performance constant directivity waveguide and speaker".
- Sprinkle; Charles M. - Ventura CA
- Sprinkle; Charles M. - Indianapolis IN
- Sprinkle; Charles M. - Simi Valley CA
| Patent | Date |
|---|---|
| Loudspeaker horn Grant 9,924,249 - Sprinkle March 20, 2 | 2018-03-20 |
| Loudspeaker Grant D796,472 - Sprinkle September 5, 2 | 2017-09-05 |
| Acoustical horn of a loudspeaker Grant D783,570 - Sprinkle April 11, 2 | 2017-04-11 |
| Loudspeaker mounting assembly Grant 9,591,397 - Sprinkle March 7, 2 | 2017-03-07 |
| Thin High Performance Constant Directivity Waveguide And Speaker App 20170055067 - MORO; Jerry ; et al. | 2017-02-23 |
| Loudspeaker Horn App 20160173975 - Sprinkle; Charles M. | 2016-06-16 |
| Transducer cover Grant D724,569 - Sprinkle March 17, 2 | 2015-03-17 |
| Loudspeaker Mounting Assembly App 20150049898 - SPRINKLE; Charles M. | 2015-02-19 |
| Loudspeaker Horn App 20150014089 - Sprinkle; Charles M. | 2015-01-15 |
| Loudspeaker Mounting Assembly App 20130022229 - Sprinkle; Charles M. | 2013-01-24 |
| Loudspeaker mounting assembly Grant 8,224,014 - Sprinkle July 17, 2 | 2012-07-17 |
| Low-profile transducer Grant 7,450,729 - Nguyen , et al. November 11, 2 | 2008-11-11 |
| Loudspeaker Mounting Assembly App 20080247593 - Sprinkle; Charles M. | 2008-10-09 |
| Acoustic transducer with folded diaphragm Grant 7,412,065 - Nguyen , et al. August 12, 2 | 2008-08-12 |
| Acoustic transducer with mechanical balancing Grant 7,333,620 - Nguyen , et al. February 19, 2 | 2008-02-19 |
| Front portion of diaphragm Grant D542,780 - Nguyen , et al. May 15, 2 | 2007-05-15 |
| Front portion of diaphragm Grant D538,791 - Nguyen , et al. March 20, 2 | 2007-03-20 |
| Acoustic transducer with mechanical balancing App 20050036647 - Nguyen, An Duc ; et al. | 2005-02-17 |
| Acoustic transducer with folded diaphragm App 20050036648 - Nguyen, An Duc ; et al. | 2005-02-17 |
| Low-profile transducer App 20050031153 - Nguyen, An Duc ; et al. | 2005-02-10 |
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