Richard C. Calderwood

Person

Portland, OR, US

People

Patents Grantslast 30 patents

Information Patent Grant
Audio speaker with graduated voice coil windings
- Patent number 7,492,918
- Issue date Feb 17, 2009
- Step Technologies Inc.
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital camera with ISO pickup sensitivity adjustment
- Patent number 7,456,868
- Issue date Nov 25, 2008
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electromagnetic transducer with eccentrically mounted voice coil fo...
- Patent number 7,233,681
- Issue date Jun 19, 2007
- STEP Technologies, Inc.
- Patrick M. Tummire
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Shorting ring fixture for electromagnetic transducer
- Patent number 7,227,970
- Issue date Jun 5, 2007
- Step Technologies Inc.
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Thermal chimney equipped audio speaker cabinet
- Patent number 7,181,039
- Issue date Feb 20, 2007
- Step Technologies Inc.
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Slow motion detection system
- Patent number 7,180,429
- Issue date Feb 20, 2007
- Intel Corporation
- Richard C. Calderwood
- G08 - SIGNALLING
Information Patent Grant
Electromagnetic transducer with asymmetric diaphragm
- Patent number 7,177,440
- Issue date Feb 13, 2007
- Step Technologies Inc.
- Patrick M. Turnmire
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Push-pull electromagnetic transducer with increased Xmax
- Patent number 7,006,654
- Issue date Feb 28, 2006
- STEP Technologies, Inc.
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Controlling data transmissions from a computer
- Patent number 6,442,607
- Issue date Aug 27, 2002
- Intel Corporation
- Rodney A. Korn
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Computer security system
- Patent number 6,266,773
- Issue date Jul 24, 2001
- Intel Corp.
- Gregory H. Kisor
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for hazard detection and distraction avoidance...
- Patent number 5,978,737
- Issue date Nov 2, 1999
- Intel Corporation
- Stephen S. Pawlowski
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Overlapping surround roll for loudspeaker
- Publication number 20080166010
- Publication date Jul 10, 2008
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Magnetically tapered air gap for electromagnetic transducer
- Publication number 20070237353
- Publication date Oct 11, 2007
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Selectable impedance, constant efficiency electromagnetic transducer
- Publication number 20070183620
- Publication date Aug 9, 2007
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Virtual television channels for audio-video system
- Publication number 20070118852
- Publication date May 24, 2007
- Stexar Corp.
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Angled thermal chimney in audio speaker cabinet
- Publication number 20070104347
- Publication date May 10, 2007
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Television program selection
- Publication number 20070101370
- Publication date May 3, 2007
- Stexar Corp.
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Magnetically tapered air gap for electromagnetic transducer
- Publication number 20060239496
- Publication date Oct 26, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Bessel soundbar
- Publication number 20060182298
- Publication date Aug 17, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Bessel array with full amplitude signal to half amplitude position...
- Publication number 20060159289
- Publication date Jul 20, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MTM of bessels loudspeaker
- Publication number 20060159287
- Publication date Jul 20, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Bessel dipole loudspeaker
- Publication number 20060159288
- Publication date Jul 20, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Bessel array with non-empty null positions
- Publication number 20060159286
- Publication date Jul 20, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical disc drive with integral hard disk cache drive
- Publication number 20060152847
- Publication date Jul 13, 2006
- Enrique M. Stiles
- G11 - INFORMATION STORAGE
Information Patent Application
Chamber-loaded augmented passive radiator
- Publication number 20060078136
- Publication date Apr 13, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Compound-driven augmented passive radiator
- Publication number 20060078144
- Publication date Apr 13, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Hard disk drive with multiple spindles
- Publication number 20060044663
- Publication date Mar 2, 2006
- Enrique M. Stiles
- G11 - INFORMATION STORAGE
Information Patent Application
Audio speaker with graduated voice coil windings
- Publication number 20060039578
- Publication date Feb 23, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Bessel array
- Publication number 20060018490
- Publication date Jan 26, 2006
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Shorting ring fixture for electromagnetic transducer
- Publication number 20050190945
- Publication date Sep 1, 2005
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Thermal chimney equipped audio speaker cabinet
- Publication number 20050169494
- Publication date Aug 4, 2005
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Electromagnetic transducer with eccentrically mounted voice coil fo...
- Publication number 20050105757
- Publication date May 19, 2005
- Patrick M. Tummire
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Nanoporous diaphragm for electromagentic transducer
- Publication number 20050089187
- Publication date Apr 28, 2005
- Patrick M. Turnmire
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Electromagnetic transducer motor structure with radial thermal extr...
- Publication number 20050041831
- Publication date Feb 24, 2005
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Push-pull electromagnetic transducer with increased Xmax
- Publication number 20040156527
- Publication date Aug 12, 2004
- Enrique M. Stiles
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Electromagnetic transducer with asymmetric diaphragm
- Publication number 20040125980
- Publication date Jul 1, 2004
- Patrick M. Turnmire
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Slow motion detection system
- Publication number 20030151670
- Publication date Aug 14, 2003
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital camera with ISO pickup sensitivity adjustment
- Publication number 20030146986
- Publication date Aug 7, 2003
- Richard C. Calderwood
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Richard C. Calderwood

Person

Patents Grantslast 30 patents

Audio speaker with graduated voice coil windings

Digital camera with ISO pickup sensitivity adjustment

Electromagnetic transducer with eccentrically mounted voice coil fo...

Shorting ring fixture for electromagnetic transducer

Thermal chimney equipped audio speaker cabinet

Slow motion detection system

Electromagnetic transducer with asymmetric diaphragm

Push-pull electromagnetic transducer with increased Xmax

Controlling data transmissions from a computer

Computer security system

Method and apparatus for hazard detection and distraction avoidance...

Patents Applicationslast 30 patents

Overlapping surround roll for loudspeaker

Magnetically tapered air gap for electromagnetic transducer

Selectable impedance, constant efficiency electromagnetic transducer

Virtual television channels for audio-video system

Angled thermal chimney in audio speaker cabinet

Television program selection

Magnetically tapered air gap for electromagnetic transducer

Bessel soundbar

Bessel array with full amplitude signal to half amplitude position...

MTM of bessels loudspeaker

Bessel dipole loudspeaker

Bessel array with non-empty null positions

Optical disc drive with integral hard disk cache drive

Chamber-loaded augmented passive radiator

Compound-driven augmented passive radiator

Hard disk drive with multiple spindles

Audio speaker with graduated voice coil windings

Bessel array

Shorting ring fixture for electromagnetic transducer

Thermal chimney equipped audio speaker cabinet

Electromagnetic transducer with eccentrically mounted voice coil fo...

Nanoporous diaphragm for electromagentic transducer

Electromagnetic transducer motor structure with radial thermal extr...

Push-pull electromagnetic transducer with increased Xmax

Electromagnetic transducer with asymmetric diaphragm

Slow motion detection system

Digital camera with ISO pickup sensitivity adjustment