Patents Assigned to Ultraviolet Sciences, Inc.
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Patent number: 9865448Abstract: A light source, with electrodes of alternating polarity attached to a substrate in an excimer ultraviolet (UV) lamp, for generating a plasma discharge between each of the electrodes. The shape of the substrate can shape and control the plasma discharge to reduce exposure of materials susceptible to attack by the halogens. The electrodes can be located such that the plasma discharge occurs in a region where it produces less contact of the halogens with the vulnerable areas of the lamp enclosure. The materials, such as the electrodes, substrate, and envelope, can be selected to withstand corrosive materials. In another embodiment, a plurality of sealed tubes, at least some of which contain an excimer gas are positioned between two electrodes.Type: GrantFiled: January 30, 2015Date of Patent: January 9, 2018Assignee: Ultraviolet Sciences, Inc.Inventors: James Randall Cooper, Ronald W. Chaffee
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Patent number: 9808544Abstract: An apparatus for the treatment of a liquid that includes a chamber having at least one inner surface, the chamber adapted for passage of a fluid therethrough. The chamber is at least 80 percent enclosed. The apparatus also includes an optional ultraviolet-transmissive tube disposed within the chamber and also adapted for the passage of the liquid therethrough. The apparatus further includes an ultraviolet lamp disposed within the chamber and, optionally, within the ultraviolet-transmissive tube. A reflective material is interposed between the chamber and the transmissive tube. The reflective material is adapted so as to reflect at least a portion of light emitted by the ultraviolet lamp, wherein the reflective material is at least 80 percent reflective.Type: GrantFiled: March 31, 2009Date of Patent: November 7, 2017Assignee: Ultraviolet Sciences, Inc.Inventors: James Randall Cooper, Richard May
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Patent number: 9511344Abstract: An apparatus for the treatment of a liquid comprising includes a chamber having at least one inner surface. The chamber is at least 80 percent enclosed. The apparatus also includes an ultraviolet (UV) transmissive tube and the UV transmissive tube disposed within the chamber and adapted for the passage of the liquid therethrough. The apparatus further includes an UV lamp and the UV lamp being disposed within the UV transmissive tube. A reflective material is interspersed between the chamber and the transmissive tube, and the reflective material is adapted so as to reflect at least a portion of light emitted by the UV lamp. Additionally, the reflective material is at least 80 percent reflective.Type: GrantFiled: December 18, 2007Date of Patent: December 6, 2016Assignee: Ultraviolet Sciences, Inc.Inventors: James Randall Cooper, Richard May
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Patent number: 8946662Abstract: A light source, with electrodes of alternating polarity attached to a substrate in an excimer ultraviolet (UV) lamp, for generating a plasma discharge between each of the electrodes. The shape of the substrate can shape and control the plasma discharge to reduce exposure of materials susceptible to attack by the halogens. The electrodes can be located such that the plasma discharge occurs in a region where it produces less contact of the halogens with the vulnerable areas of the lamp enclosure. The materials, such as the electrodes, substrate, and envelope, can be selected to withstand corrosive materials. In another embodiment, a plurality of sealed tubes, at least some of which contain an excimer gas are positioned between two electrodes.Type: GrantFiled: September 28, 2011Date of Patent: February 3, 2015Assignee: Ultraviolet Sciences, Inc.Inventors: James Randall Cooper, Ronald W. Chaffee
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Publication number: 20130175454Abstract: A light source, with electrodes of alternating polarity attached to a substrate in an excimer ultraviolet (UV) lamp, for generating a plasma discharge between each of the electrodes. The shape of the substrate can shape and control the plasma discharge to reduce exposure of materials susceptible to attack by the halogens. The electrodes can be located such that the plasma discharge occurs in a region where it produces less contact of the halogens with the vulnerable areas of the lamp enclosure. The materials, such as the electrodes, substrate, and envelope, can be selected to withstand corrosive materials. In another embodiment, a plurality of sealed tubes, at least some of which contain an excimer gas are positioned between two electrodes.Type: ApplicationFiled: September 28, 2011Publication date: July 11, 2013Applicant: ULTRAVIOLET SCIENCES, INC.Inventors: James Randall Cooper, Ronald W. Chaffee
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Publication number: 20100078574Abstract: An apparatus for the treatment of a liquid that includes a chamber having at least one inner surface, the chamber adapted for passage of a fluid therethrough. The chamber is at least 80 percent enclosed. The apparatus also includes an optional ultraviolet-transmissive tube disposed within the chamber and also adapted for the passage of the liquid therethrough. The apparatus further includes an ultraviolet lamp disposed within the chamber and, optionally, within the ultraviolet-transmissive tube. A reflective material is interposed between the chamber and the transmissive tube. The reflective material is adapted so as to reflect at least a portion of light emitted by the ultraviolet lamp, wherein the reflective material is at least 80 percent reflective.Type: ApplicationFiled: March 31, 2009Publication date: April 1, 2010Applicant: Ultraviolet Sciences, Inc., a California corporationInventors: James Randall Cooper, Richard May
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Publication number: 20090155136Abstract: An apparatus for the treatment of a liquid comprising includes a chamber having at least one inner surface. The chamber is at least 80 percent enclosed. The apparatus also includes an ultraviolet (UV) transmissive tube and the UV transmissive tube disposed within the chamber and adapted for the passage of the liquid therethrough. The apparatus further includes an UV lamp and the UV lamp being disposed within the UV transmissive tube. A reflective material is interspersed between the chamber and the transmissive tube, and the reflective material is adapted so as to reflect at least a portion of light emitted by the UV lamp. Additionally, the reflective material is at least 80 percent reflective.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: ULTRAVIOLET SCIENCES, INC.,a California corporationInventors: James Randall Cooper, Richard May
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Patent number: 7511281Abstract: This invention relates generally to methods and apparatuses for the treatment of liquids and gases using ultraviolet light. In one embodiment, a substantially enclosed chamber coated with a reflective material containing an ultraviolet lamp and an ultraviolet transmissive tube running through the chamber for the treatment of liquid passed therethrough is disclosed.Type: GrantFiled: August 31, 2005Date of Patent: March 31, 2009Assignee: Ultraviolet Sciences, Inc.Inventor: James Randall Cooper
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Publication number: 20080284335Abstract: A discharge device for operation in a gas at a prescribed pressure includes cathode that is at least partially enclosed by a dielectric layer. The dielectric layer is at least partially enclosed by an anode. The dielectric and the anode have one or more aligned penetrations therein. The cathode may be hollow to allow a cooling fluid to circulate inside the cathode to cool the lamp.Type: ApplicationFiled: May 15, 2008Publication date: November 20, 2008Applicant: Ultraviolet Sciences, Inc.Inventors: Richard May, James Randall Cooper
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Patent number: 7439663Abstract: A high pressure gas discharge device and methods of using the device as a UV gas discharge light source are disclosed. The device has a cathode covered partially with a dielectric layer which separates the cathode from an anode. A discharge device utilizes one or more microhollows in the uncovered part of the cathode. Methods of utilizing the discharge devise as a gas discharge light source for producing ultrapure water.Type: GrantFiled: December 29, 2003Date of Patent: October 21, 2008Assignee: Ultraviolet Sciences, Inc.Inventors: James Randall Cooper, Karl H. Schoenbach
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Publication number: 20080174241Abstract: A high pressure gas discharge device and methods of using the device as a UV gas discharge light source are disclosed. The device has a cathode covered partially with a dielectric layer which separates the cathode from an anode. A discharge device utilizes one or more microhollows in the uncovered part of the cathode. Methods of utilizing the discharge devise as a gas discharge light source for producing ultapure water.Type: ApplicationFiled: December 18, 2007Publication date: July 24, 2008Applicant: Ultraviolet Sciences,Inc.Inventors: James Randall Cooper, Karl H. Schoenbach
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Publication number: 20070045561Abstract: This invention relates generally to methods and apparatuses for the treatment of liquids and gases using ultraviolet light. In one embodiment, a substantially enclosed chamber coated with a reflective material containing an ultraviolet lamp and an ultraviolet transmissive tube running through the chamber for the treatment of liquid passed therethrough is disclosed.Type: ApplicationFiled: August 31, 2005Publication date: March 1, 2007Applicant: Ultraviolet Sciences, Inc.Inventor: James Cooper