Calderwood; Richard C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Calderwood; Richard C..The latest application filed is for "overlapping surround roll for loudspeaker".
- Calderwood; Richard C. - Portland OR
| Patent | Date |
|---|---|
| Audio speaker with graduated voice coil windings Grant 7,492,918 - Stiles , et al. February 17, 2 | 2009-02-17 |
| Digital camera with ISO pickup sensitivity adjustment Grant 7,456,868 - Calderwood November 25, 2 | 2008-11-25 |
| Overlapping surround roll for loudspeaker App 20080166010 - Stiles; Enrique M. ; et al. | 2008-07-10 |
| Magnetically tapered air gap for electromagnetic transducer App 20070237353 - Stiles; Enrique M. ; et al. | 2007-10-11 |
| Selectable impedance, constant efficiency electromagnetic transducer App 20070183620 - Stiles; Enrique M. ; et al. | 2007-08-09 |
| Electromagnetic transducer with eccentrically mounted voice coil former Grant 7,233,681 - Tummire , et al. June 19, 2 | 2007-06-19 |
| Shorting ring fixture for electromagnetic transducer Grant 7,227,970 - Calderwood , et al. June 5, 2 | 2007-06-05 |
| Virtual television channels for audio-video system App 20070118852 - Calderwood; Richard C. | 2007-05-24 |
| Angled thermal chimney in audio speaker cabinet App 20070104347 - Stiles; Enrique M. ; et al. | 2007-05-10 |
| Television program selection App 20070101370 - Calderwood; Richard C. | 2007-05-03 |
| Thermal chimney equipped audio speaker cabinet Grant 7,181,039 - Stiles , et al. February 20, 2 | 2007-02-20 |
| Slow motion detection system Grant 7,180,429 - Calderwood February 20, 2 | 2007-02-20 |
| Electromagnetic transducer with asymmetric diaphragm Grant 7,177,440 - Turnmire , et al. February 13, 2 | 2007-02-13 |
| Magnetically tapered air gap for electromagnetic transducer App 20060239496 - Stiles; Enrique M. ; et al. | 2006-10-26 |
| Bessel soundbar App 20060182298 - Stiles; Enrique M. ; et al. | 2006-08-17 |
| Bessel dipole loudspeaker App 20060159288 - Stiles; Enrique M. ; et al. | 2006-07-20 |
| MTM of bessels loudspeaker App 20060159287 - Stiles; Enrique M. ; et al. | 2006-07-20 |
| Bessel array with full amplitude signal to half amplitude position transducers App 20060159289 - Stiles; Enrique M. ; et al. | 2006-07-20 |
| Bessel array with non-empty null positions App 20060159286 - Stiles; Enrique M. ; et al. | 2006-07-20 |
| Optical disc drive with integral hard disk cache drive App 20060152847 - Stiles; Enrique M. ; et al. | 2006-07-13 |
| Piston engine with selectable firing order Grant 7,063,059 - Calderwood June 20, 2 | 2006-06-20 |
| Chamber-loaded augmented passive radiator App 20060078136 - Stiles; Enrique M. ; et al. | 2006-04-13 |
| Compound-driven augmented passive radiator App 20060078144 - Stiles; Enrique M. ; et al. | 2006-04-13 |
| Hard disk drive with multiple spindles App 20060044663 - Stiles; Enrique M. ; et al. | 2006-03-02 |
| Push-pull electromagnetic transducer with increased Xmax Grant 7,006,654 - Stiles , et al. February 28, 2 | 2006-02-28 |
| Audio speaker with graduated voice coil windings App 20060039578 - Stiles; Enrique M. ; et al. | 2006-02-23 |
| Bessel array App 20060018490 - Stiles; Enrique M. ; et al. | 2006-01-26 |
| Shorting ring fixture for electromagnetic transducer App 20050190945 - Calderwood, Richard C. ; et al. | 2005-09-01 |
| Thermal chimney equipped audio speaker cabinet App 20050169494 - Stiles, Enrique M. ; et al. | 2005-08-04 |
| Electromagnetic transducer with eccentrically mounted voice coil former App 20050105757 - Tummire, Patrick M. ; et al. | 2005-05-19 |
| Nanoporous diaphragm for electromagentic transducer App 20050089187 - Turnmire, Patrick M. ; et al. | 2005-04-28 |
| Electromagnetic transducer motor structure with radial thermal extraction paths App 20050041831 - Stiles, Enrique M. ; et al. | 2005-02-24 |
| Push-pull electromagnetic transducer with increased Xmax App 20040156527 - Stiles, Enrique M. ; et al. | 2004-08-12 |
| Electromagnetic transducer with asymmetric diaphragm App 20040125980 - Turnmire, Patrick M. ; et al. | 2004-07-01 |
| Slow motion detection system App 20030151670 - Calderwood, Richard C. | 2003-08-14 |
| Digital camera with ISO pickup sensitivity adjustment App 20030146986 - Calderwood, Richard C. | 2003-08-07 |
| Controlling data transmissions from a computer Grant 6,442,607 - Korn , et al. August 27, 2 | 2002-08-27 |
| Computer security system Grant 6,266,773 - Kisor , et al. July 24, 2 | 2001-07-24 |
| Method and apparatus for hazard detection and distraction avoidance for a vehicle Grant 5,978,737 - Pawlowski , et al. November 2, 1 | 1999-11-02 |
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