Richard C Powers

Address:

6128 Bradford Ln, League City, TX 77573

VIN:

5N1AR1NNXBC610697

Make:

NISSAN

Model:

PATHFINDER

Year:

2011

US Patent:

7382880, Jun 3, 2008

Filed:

Jan 26, 2004

Appl. No.:

10/764966

Inventors:

Michael F. Angelo - Houston TX, US
Larry N. McMahan - Fremont CA, US
Richard D. Powers - Highland Village TX, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

H04L 9/00

US Classification:

380259

Abstract:

A method and apparatus for initializing multiple security modules are provided. The method may comprise the acts of determining if the security module is a controlling security module or a subordinate security module, generating at least one key if the security module is the controlling security module, and receiving at least one key from another security module if the security module is the subordinate security module. The apparatus may comprise a detector that is adapted to determine if the security module is a controlling security module or a subordinate security module, a key generator that generates a key for the security module if the security module is the controlling security module, and a key receiver that receives a key from another security module if the security module is the subordinate security module.

US Patent:

7601946, Oct 13, 2009

Filed:

Sep 12, 2007

Appl. No.:

11/854300

Inventors:

Richard M. Powers - Lakewood CO, US
Wil McCarthy - Lakewood CO, US
Paul Ciszek - Lakewood CO, US

Assignee:

RavenBrick, LLC - Denver CO

International Classification:

H01J 40/14

US Classification:

250226, 25022721

Abstract:

A multispectral optical sensor incorporating quantum confinement devices is composed of a solid-state tunable filter, an optional lens, and a photodetector or plurality of photodetectors. The tunable filter is multilayered composite film of semiconducting materials, which includes a quantum well or other quantum confinement structure and barrier materials to ensure the proper confinement of charge carriers within the quantum well. The tunable filter is capable of acting as a long-pass filter. The approximate cut-on wavelength is established through selection of a well material with a bandgap near the desired energy, and barrier materials with a higher bandgap. For a given reference temperature the exact cut-on wavelength may be fixed through careful selection of the dimensions of the quantum confinement structures, whose quantum confinement energy is added to the bandgap energy to yield the cut-on energy. The operational cut-on wavelength at any given moment may be controlled through variation of the temperature of the tunable filter using onboard or external thermal control hardware and through control of an electric field applied across the filter.

US Patent:

7755829, Jul 13, 2010

Filed:

Jul 11, 2008

Appl. No.:

12/172156

Inventors:

Richard M. Powers - Lakewood CO, US
Wil McCarthy - Lakewood CO, US

Assignee:

RavenBrick LLC - Denver CO

International Classification:

G02F 1/01
G02B 26/02
E06B 7/00

US Classification:

359288, 359227, 521713

Abstract:

The thermally switched reflective optical shutter is a self-regulating “switchable mirror” device that reflects up to 100% of incident radiant energy above a threshold temperature, and reflects up to 50% of incident radiant energy below a threshold temperature. Control over the flow of radiant energy occurs independently of the thermal conductivity or insulating value of the device, and may or may not preserve the image and color properties of incoming visible light. The device can be used as a construction material to efficiently regulate the internal temperature and illumination of buildings, vehicles, and other structures without the need for an external power supply or operator signals. The device has unique aesthetic optical properties that are not found in traditional windows, skylights, stained glass, light fixtures, glass blocks, bricks, or walls. The device can be tailored to transmit sufficient visible light to see through in both the transparent and reflective states, while still providing significant control over the total energy transmission across the device.

US Patent:

7768693, Aug 3, 2010

Filed:

Jan 24, 2008

Appl. No.:

12/019602

Inventors:

Wil McCarthy - Lakewood CO, US
Richard M. Powers - Lakewood CO, US

Assignee:

RavenBrick LLC - Denver CO

International Classification:

G02F 1/35
G02F 2/02
F21V 9/04

US Classification:

359326, 359359, 359641, 359707, 359885, 2505171, 349104

Abstract:

A thermally switched optical downconverting (TSOD) filter is a self-regulating device including a downconverter that converts incoming light at a variety of wavelengths into longer-wavelength radiation and then directs it using one or more bandblock filters in either the inward or outward direction, depending on the temperature of the device. This control over the flow of radiant energy occurs independently of the thermal conductivity or insulating properties of the device and may or may not preserve the image and color properties of incoming visible light. The TSOD filter has energy-efficiency implications, as it can be used to regulate the internal temperature and illumination of buildings, vehicles, and other structures without the need for an external power supply or operator signals. The TSOD filter also has aesthetic implications, since the device has unique optical properties that are not found in traditional windows, skylights, stained glass, light fixtures, glass blocks, bricks, or walls. The TSOD filter has particular, but not exclusive, application as a building material.

US Patent:

7930503, Apr 19, 2011

Filed:

Jan 26, 2004

Appl. No.:

10/764918

Inventors:

Michael F. Angelo - Houston TX, US
Larry N. McMahan - Fremont CA, US
Richard D. Powers - Highland Village TX, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 13/10

US Classification:

711164

Abstract:

The disclosed embodiments relate to a security module and a method of operating a security module. The method may comprise the acts of detecting a second security module, determining whether a key associated with the second security module is available to the first security module, and obtaining the key associated with the second security module if the key associated with the second security module is not available to the first security module. The security module may comprise a detector that is adapted to detect another security module and determine whether one of a plurality of keys is associated with the other security module, and a device that obtains at least one key associated with the other security module if the one of the plurality of keys is not associated with the other security module.

US Patent:

7936500, May 3, 2011

Filed:

Feb 29, 2008

Appl. No.:

12/040570

Inventors:

Richard M. Powers - Lakewood CO, US
Wil McCarthy - Lakewood CO, US

Assignee:

RavenBrick LLC - Denver CO

International Classification:

G02F 1/35
G02B 27/00
H01L 29/06

US Classification:

359326, 359578, 359579, 257 14, 250226

Abstract:

A wavelength-specific optical switch combines one or more tunable filters and bandblock reflectors such that the absorption or reflection of selected wavelength bands in the optical spectrum (visible, near infrared, or near ultraviolet) can be switched on and off. The wavelength switch is programmable, multifunctional, general-purpose, solid-state optical filter. The wavelength switch may serve as a tunable notch or bandblock filter, a tunable bandpass filter, a tunable highpass or lowpass filter, or a tunable band reflector. The wavelength switch has particular, but not exclusive, application in optics as a filter, band reflector, and as a means of isolating particular wavelengths or wavelength bands from a collimated light stream for transmission to, or rejection from, a sensor.

US Patent:

7977621, Jul 12, 2011

Filed:

Oct 9, 2009

Appl. No.:

12/576847

Inventors:

Wil McCarthy - Lakewood CO, US
Richard M. Powers - Lakewood CO, US

Assignee:

RavenBrick LLC - Denver CO

International Classification:

G01J 3/50

US Classification:

250226, 250239

Abstract:

A thermochromic optical filter incorporating quantum confinement devices is formed as multilayered composite film of semiconducting materials. A quantum well adjacent a barrier layer ensures proper confinement of charge carriers within the well. A transition wavelength (i. e. , the energy/wavelength at which the filter becomes transparent) is established by selecting a quantum well material with a bandgap near the desired energy and a barrier layer material with a higher bandgap. For a given reference temperature (e. g. , room temperature), the exact transition wavelength is fixed by the thickness of the quantum well. The quantum confinement energy is added to the bandgap energy to yield the transition energy. A thermal control system varies the temperature of the thermochromic filter to adjust the transition wavelength. Temperature changes affect both the bandgap and the quantum confinement energy, and thus the optical properties of the thermochromic filter.

US Patent:

8072672, Dec 6, 2011

Filed:

Jul 2, 2010

Appl. No.:

12/830068

Inventors:

Richard M. Powers - Lakewood CO, US
Wil McCarthy - Lakewood CO, US

Assignee:

RavenBrick LLC - Denver CO

International Classification:

G02F 1/01
G02B 26/02
E06B 7/00

US Classification:

359288, 359227, 521713

Abstract:

The thermally switched reflective optical shutter is a self-regulating “switchable mirror” device that reflects up to 100% of incident radiant energy above a threshold temperature, and reflects up to 50% of incident radiant energy below a threshold temperature. Control over the flow of radiant energy occurs independently of the thermal conductivity or insulating value of the device, and may or may not preserve the image and color properties of incoming visible light. The device can be used as a construction material to efficiently regulate the internal temperature and illumination of buildings, vehicles, and other structures without the need for an external power supply or operator signals. The device has unique aesthetic optical properties that are not found in traditional windows, skylights, stained glass, light fixtures, glass blocks, bricks, or walls. The device can be tailored to transmit sufficient visible light to see through in both the transparent and reflective states, while still providing significant control over the total energy transmission across the device.