Patents by Inventor Chandrashekhar J. Joshi
Chandrashekhar J. Joshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8110988Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: GrantFiled: February 15, 2011Date of Patent: February 7, 2012Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Publication number: 20110221341Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: ApplicationFiled: February 15, 2011Publication date: September 15, 2011Applicant: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7919923Abstract: A plasma lamp and a method of generating light are provided. The plasma lamp may include a lamp body having a dielectric constant greater than about 2 and a power source. The power source is coupled to the lamp body by a feed to provide power to the lamp body. A bulb containing a fill having a first portion and a second portion is provided. The bulb is positioned so that the first portion of the fill is located within the lamp body and the second portion of the fill is located outside of the lamp body. In use, the fill receives at least a portion of the power from the lamp body to form a light-emitting plasma. The volume of the bulb is less than the volume of the lamp body.Type: GrantFiled: October 15, 2008Date of Patent: April 5, 2011Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Publication number: 20090167183Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: ApplicationFiled: October 15, 2008Publication date: July 2, 2009Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7498747Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: GrantFiled: March 18, 2005Date of Patent: March 3, 2009Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7391158Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.Type: GrantFiled: March 18, 2005Date of Patent: June 24, 2008Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7362056Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.Type: GrantFiled: March 18, 2005Date of Patent: April 22, 2008Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7362054Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: GrantFiled: March 18, 2005Date of Patent: April 22, 2008Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7362055Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: GrantFiled: March 18, 2005Date of Patent: April 22, 2008Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7358678Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: GrantFiled: March 18, 2005Date of Patent: April 15, 2008Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 7348732Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.Type: GrantFiled: February 4, 2004Date of Patent: March 25, 2008Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Publication number: 20040155589Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.Type: ApplicationFiled: February 4, 2004Publication date: August 12, 2004Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Patent number: 6737809Abstract: A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in a cavity within the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.Type: GrantFiled: March 15, 2001Date of Patent: May 18, 2004Assignee: Luxim CorporationInventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Publication number: 20020011802Abstract: A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.Type: ApplicationFiled: March 15, 2001Publication date: January 31, 2002Inventors: Frederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang