Reginald Alonzo Clark

US Patent:

6566659, May 20, 2003

Filed:

Jun 4, 1999

Appl. No.:

09/326168

Inventors:

Reginald Wayne Clark - Del Mar CA
James C. Lierman - San Diego CA
Donald Lander - La Jolla CA
Joseph E. Dunn - Crystal Lake IL

Assignee:

PurePulse Technologies, Inc. - San Diego CA

International Classification:

B65B 5508

US Classification:

25045511, 25045311, 422 22, 422 23, 422 24

Abstract:

An approach for sterilizing microorganisms at a target object employs a flashlamp system including means for generating pulses of light, and for deactivating microorganisms within the target object by illuminating the target object with the pulses of light having been generated; a photo-sensitive detector positioned so as to receive a portion of each of the pulses of light as a measure of an amount of light illuminating the target object, for generating an output signal in response thereto; and a control system, coupled to the flashlamp system and the photo-sensitive detector, for determining, in response to the output signal, whether the pulses of light are sufficient to effect a prescribed level of deactivation of microorganisms at the target object. In accordance with this approach sterilizing microorganisms involves steps of generating a pulse of light; deactivating microorganisms at the target object by directing the pulse of light having been generated at the target object; receiving a portion of the pulse of light as a measure of an amount of the pulse of light illuminating the target object; generating an output signal in response to the receiving of the portion of the pulse of light; and determining, in response to the generating of the output signal, whether the pulse of light is sufficient to effect a prescribed level of deactivation of microorganisms at the target object.

US Patent:

7038219, May 2, 2006

Filed:

Oct 26, 2001

Appl. No.:

10/039311

Inventors:

Reginald Wayne Clark - Del Mar CA, US
James C. Lierman - San Diego CA, US
Donald Lander - La Jolla CA, US
Joseph E. Dunn - Crystal Lake IL, US

Assignee:

PurePulse Technologies, Inc. - San Diego CA

International Classification:

A61L 2/10
B65B 55/08

US Classification:

25045511, 422 24

Abstract:

An apparatus, and related methods for sterilizing microorganisms in a container, the apparatus consists of the container including a blister formed therein and a backing material that together with the blister form a cavity in which is contained a contact lens and a preservative fluid. A flashlamp generates high-intensity, short-duration pulses of light for deactivating microorganisms within the container by illuminating the container with the pulses of light having been generated.

US Patent:

7875247, Jan 25, 2011

Filed:

Jul 23, 2007

Appl. No.:

11/781812

Inventors:

Reginald W. Clark - San Diego CA, US
Bernard J. Eastlund - San Diego CA, US
Michael W. Ingram - San Diego CA, US
Joseph C. Stumpf - Carlsbad CA, US

Assignee:

Novatron, Inc. - San Diego CA

International Classification:

A61L 9/20

US Classification:

422121, 422 24, 422120, 25045511

Abstract:

An ultraviolet flux multiplying air sterilization chamber comprises inner surfaces having a diffuse reflective behavior. The sterilization chamber includes an inlet aperture and an outlet aperture for air to flow through said chamber and a light source emitting an ultraviolet light. Due to the reflectivity of the inner surfaces of the chamber, a flux of the ultraviolet light is multiplied by reflecting multiple times from the inner surfaces of the chamber. The inlet and outlet apertures are advantageously configured to reduce the amount of light that escapes from the chamber and increase the amount of photons available in the chamber. In an exemplary embodiment, perforated end panels having diffuse, reflective interior surfaces may be provided over at least a portion of the inlet and outlet apertures.

US Patent:

8404186, Mar 26, 2013

Filed:

Jan 13, 2011

Appl. No.:

13/006143

Inventors:

Reginald W. Clark - San Diego CA, US
Bernard J. Eastland - San Diego CA, US
Michael W. Ingram - San Diego CA, US
Joseph C. Stumpf - Carlsbad CA, US

Assignee:

Novatron, Inc. - San Diego CA

International Classification:

A61L 9/20

US Classification:

422120, 422 24, 25045511

Abstract:

An ultraviolet flux multiplying air sterilization chamber comprises inner surfaces having a diffuse reflective behavior. The sterilization chamber includes an inlet aperture and an outlet aperture for air to flow through said chamber and a light source emitting an ultraviolet light. Due to the reflectivity of the inner surfaces of the chamber, a flux of the ultraviolet light is multiplied by reflecting multiple times from the inner surfaces of the chamber. The inlet and outlet apertures are advantageously configured to reduce the amount of light that escapes from the chamber and increase the amount of photons available in the chamber. In an exemplary embodiment, perforated end panels having diffuse, reflective interior surfaces may be provided over at least a portion of the inlet and outlet apertures.

US Patent:

20020091294, Jul 11, 2002

Filed:

Mar 26, 2001

Appl. No.:

09/818256

Inventors:

Joseph Dunn - Vista CA, US
Reginald Clark - Del Mar CA, US
Andrew Bushnell - San Diego CA, US
Kenton Salisbury - San Diego CA, US

International Classification:

C02F001/30
B01J019/08
A62D003/00
A23L003/26

US Classification:

588/227000, 204/157150, 210/748000, 422/186000, 426/240000, 426/237000, 426/238000, 426/248000

Abstract:

A method of deactivating microorganisms in food products, packaging material, water, air, and other products involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad- spectrum polychromatic light. In variations of this embodiment, the light has an intensity of at least 0.1 J/cm, the pulse duration is from between about 10 nanoseconds and 10 milliseconds, and/or at least 50% of the at least one pulse's energy is transmitted in light having wavelength from between about 170 and 2600 nanometers. Advantageously, the microorganisms may be oocysts, spores or poliovirus.

US Patent:

20040166018, Aug 26, 2004

Filed:

Nov 26, 2003

Appl. No.:

10/724017

Inventors:

Reginald Clark - San Diego CA, US
Bernard Eastlund - San Diego CA, US
Michael Ingram - San Diego CA, US
Joseph Stumpf - Carlsbad CA, US

International Classification:

A61L009/20

US Classification:

422/004000, 422/121000

Abstract:

An ultraviolet flux multiplying air sterilization chamber comprises inner surfaces having a diffuse reflective behavior. The sterilization chamber includes an inlet aperture and an outlet aperture for air to flow through said chamber and a light source emitting an ultraviolet light. Due to the reflectivity of the inner surfaces of the chamber, a flux of the ultraviolet light is multiplied by reflecting multiple times from the inner surfaces of the chamber. The inlet and outlet apertures are advantageously configured to reduce the amount of light that escapes from the chamber and increase the amount of photons available in the chamber. In an exemplary embodiment, packed arrays of fibers, spheres, or other small particles are placed at the inlet and/or outlet to the chamber. These packed arrays provide light scattering events such that the light incident on the packed arrays reflects back with high reflectivity.

US Patent:

20120315184, Dec 13, 2012

Filed:

May 4, 2012

Appl. No.:

13/464431

Inventors:

Reginald W. Clark - San Diego CA, US

Assignee:

NOVATRON, INC. - San Diego CA

International Classification:

A61L 9/20

US Classification:

422 4, 250436

Abstract:

The present disclosure relates to an apparatus and its methods of use which provides a reflective cavity technique that significantly increases the intensity and uniformity of UV energy, enabling very high and uniform UV irradiance. The high UV irradiance and high uniformity lead to previously unobtainable levels of air sterilization.

US Patent:

59002115, May 4, 1999

Filed:

Oct 31, 1996

Appl. No.:

8/741560

Inventors:

Joseph E. Dunn - Vista CA
Reginald Wayne Clark - Del Mar CA
Andrew H. Bushnell - San Diego CA
Kenton J Salisbury - San Diego CA

Assignee:

Purepulse Technologies - San Diego CA

International Classification:

A61L 200

US Classification:

422 24

Abstract:

A method of deactivating microorganisms in food products, packaging material, water, air, and other products involves illuminating the microorganisms using at least one short-duration, high-intensity pulse of broad-spectrum polychromatic light. In variations of this embodiment, the light has an intensity of at least 0. 1 J/cm. sup. 2, the pulse duration is from between about 10 nanoseconds and 10 milliseconds, and/or at least 50% of the at least one pulse's energy is transmitted in light having wavelength from between about 170 and 2600 nanometers. Advantageously, the microorganisms may be Cryptosporidium parvum oocysts, Bacillus pumilus spores or poliovirus.