Patents by Inventor James S. Vartuli
James S. Vartuli 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: 8385499Abstract: A two dimensional collimator assembly and method of manufacturing thereof is disclosed. The collimator assembly includes a wall structure constructed to form a two dimensional array of channels to collimate x-rays. The wall structure further includes a first portion positioned proximate the object to be scanned and configured to absorb scattered x-rays and a second portion formed integrally with the first portion and extending out from the first portion away from the object to be scanned. The first portion of the wall structure has a height greater than a height of the second portion of the wall structure. The second portion of the wall structure includes a reflective material coated thereon in each of the channels forming the two dimensional array of channels.Type: GrantFiled: December 28, 2009Date of Patent: February 26, 2013Assignee: General Electric CompanyInventors: Zhaoping Wu, Haochuan Jiang, Joseph James Lacey, James S. Vartuli, Yunfeng Sun, Qun Deng, Xiaoye Wu, Kun Tao, Zhaohui Yang
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Publication number: 20110158381Abstract: A two dimensional collimator assembly and method of manufacturing thereof is disclosed. The collimator assembly includes a wall structure constructed to form a two dimensional array of channels to collimate x-rays. The wall structure further includes a first portion positioned proximate the object to be scanned and configured to absorb scattered x-rays and a second portion formed integrally with the first portion and extending out from the first portion away from the object to be scanned. The first portion of the wall structure has a height greater than a height of the second portion of the wall structure. The second portion of the wall structure includes a reflective material coated thereon in each of the channels forming the two dimensional array of channels.Type: ApplicationFiled: December 28, 2009Publication date: June 30, 2011Inventors: Zhaoping Wu, Haochuan Jiang, Joseph James Lacey, James S. Vartuli, Yunfeng Sun, Qun Deng, Xiaoye Wu, Kun Tao, Zhaohui Yang
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Patent number: 7892061Abstract: A hermetically sealed lamp having at least one seal-material-free bond. The seal material-free bond may be a material diffusion bond, a mechanically deformed bond such as a cold weld or crimp, a focused heat bond such as a laser bond, or any other such bond. For example, the hermetically sealed lamp may have one or more endcaps diffusion bonded to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are mechanically closed via cold welding or crimping. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: GrantFiled: February 27, 2007Date of Patent: February 22, 2011Assignee: General Electric CompanyInventors: Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Anteneh Kebbede, Timothy J. Sommerer, James S. Vartuli
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Patent number: 7839089Abstract: A system and method for hermetically sealing a lamp. Certain embodiments of the lamp have an arc envelope having an open end and, also, an end structure diffusion bonded to the arc envelope at the open end. The end structure also has a dosing passageway extending into the arc envelope. In other embodiments, a lighting device is provided with an end structure adapted to close an open end of an arc envelope, and a dosing tube diffusion bonded to the end structure. Another embodiment of the lighting device has an arc envelope and an end structure diffusion bonded to an open end of the arc envelope.Type: GrantFiled: December 17, 2003Date of Patent: November 23, 2010Assignee: General Electric CompanyInventors: Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Lorio, Anteneh Kebbede, Timothy J. Sommerer, James S. Vartuli
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Patent number: 7643607Abstract: The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.Type: GrantFiled: April 27, 2006Date of Patent: January 5, 2010Assignee: General Electric CompanyInventors: Haochuan Jiang, David M. Hoffman, James S. Vartuli
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Patent number: 7525252Abstract: The present invention is directed to the use of a molybdenum-rhenium alloy in the construction of sealing tubes for high pressure discharge lamps.Type: GrantFiled: December 27, 2002Date of Patent: April 28, 2009Assignee: General Electric CompanyInventors: Luana E. Iorio, Bruce A. Knudsen, Bernard P. Bewlay, James S. Vartuli, Timothy J. Sommerer
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Patent number: 7443091Abstract: A hermetically sealed lamp having at least one seal-material-free bond. The seal material-free bond may be a material diffusion bond, a mechanically deformed bond such as a cold weld or crimp, a focused heat bond such as a laser bond, or any other such bond. For example, the hermetically sealed lamp may have one or more endcaps diffusion bonded to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are mechanically closed via cold welding or crimping. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: GrantFiled: February 27, 2007Date of Patent: October 28, 2008Assignee: General Electric CompanyInventors: Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Anteneh Kebbede, Timothy J. Sommerer, James S. Vartuli
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Patent number: 7438621Abstract: A hermetically sealed lamp having at least one end-to-end seal. The end-to-end seal may be a material diffusion bond, a seal-material bond, or any other suitable bond. For example, the hermetically sealed lamp may have one or more endcaps butt-sealed to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are butt-sealed to the endcap and/or arc envelope. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: GrantFiled: September 13, 2006Date of Patent: October 21, 2008Assignee: General Electric CompanyInventors: Anteneh Kebbede, Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Timothy J. Sommerer, James S. Vartuli
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Publication number: 20080106203Abstract: An arc tube in a high intensity discharge lamp comprises an arc body comprising a single-phase first ceramic material has a first elemental composition, and the arc body has a sealed chamber. At least two legs are attached to the arc body, and at least one of the legs has a single-phase second ceramic material having a second elemental composition that is different from the first elemental composition. An electrode is positioned within a respective leg, each electrode has a tip positioned within the chamber and the tips of the electrodes are spaced apart forming an arc region there between.Type: ApplicationFiled: November 6, 2006Publication date: May 8, 2008Inventors: Gregory M. Gratson, James A. Brewer, Venkat S. Venkataramani, Mohamed Rahmane, Bernard P. Bewlay, James S. Vartuli, Istvan Csanyi
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Patent number: 7224766Abstract: The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.Type: GrantFiled: January 4, 2005Date of Patent: May 29, 2007Assignee: General Electric CompanyInventors: Haochuan Jiang, David M. Hoffman, James S. Vartuli
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Patent number: 7215081Abstract: A hermetically sealed lamp having at least one seal-material-free bond. The seal material-free bond may be a material diffusion bond, a mechanically deformed bond such as a cold weld or crimp, a focused heat bond such as a laser bond, or any other such bond. For example, the hermetically sealed lamp may have one or more endcaps diffusion bonded to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are mechanically closed via cold welding or crimping. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: GrantFiled: December 18, 2002Date of Patent: May 8, 2007Assignee: General Electric CompanyInventors: Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Anteneh Kebbede, Timothy J. Sommerer, James S. Vartuli
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Patent number: 7132797Abstract: A hermetically sealed lamp having at least one end-to-end seal. The end-to-end seal may be a material diffusion bond, a seal-material bond, or any other suitable bond. For example, the hermetically sealed lamp may have one or more endcaps butt-sealed to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are butt-sealed to the endcap and/or arc envelope. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: GrantFiled: December 18, 2002Date of Patent: November 7, 2006Assignee: General Electric CompanyInventors: Anteneh Kebbede, Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorlo, Timothy J. Sommerer, James S. Vartuli
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Patent number: 7054408Abstract: The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator may and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.Type: GrantFiled: April 30, 2003Date of Patent: May 30, 2006Assignee: General Electric CompanyInventors: Haochuan Jiang, David M. Hoffman, James S. Vartuli
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Publication number: 20040218712Abstract: The present invention is a directed to a non-pixilated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.Type: ApplicationFiled: April 30, 2003Publication date: November 4, 2004Inventors: Haochuan Jiang, David M. Hoffman, James S. Vartuli
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Publication number: 20040135510Abstract: A system and method for hermetically sealing a lamp. Certain embodiments of the lamp have an arc envelope having an open end and, also, an end structure diffusion bonded to the arc envelope at the open end. The end structure also has a dosing passageway extending into the arc envelope. In other embodiments, a lighting device is provided with an end structure adapted to close an open end of an arc envelope, and a dosing tube diffusion bonded to the end structure. Another embodiment of the lighting device has an arc envelope and an end structure diffusion bonded to an open end of the arc envelope.Type: ApplicationFiled: December 17, 2003Publication date: July 15, 2004Inventors: Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Anteneh Kebbede, Timothy J. Sommerer, James S. Vartuli
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Publication number: 20040124776Abstract: The present invention is directed to the use of a molybdenum-rhenium alloy in the construction of sealing tubes for high pressure discharge lamps.Type: ApplicationFiled: December 27, 2002Publication date: July 1, 2004Applicant: GENERAL ELECTRIC COMPANYInventors: Luana E. Iorio, Bruce A. Knudsen, Bernard P. Bewlay, James S. Vartuli, Timothy J. Sommerer
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Publication number: 20040119414Abstract: A hermetically sealed lamp having at least one seal-material-free bond. The seal material-free bond may be a material diffusion bond, a mechanically deformed bond such as a cold weld or crimp, a focused heat bond such as a laser bond, or any other such bond. For example, the hermetically sealed lamp may have one or more endcaps diffusion bonded to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are mechanically closed via cold welding or crimping. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: ApplicationFiled: December 18, 2002Publication date: June 24, 2004Inventors: Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Anteneh Kebbede, Timothy J. Sommerer, James S. Vartuli
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Publication number: 20040119413Abstract: A hermetically sealed lamp having at least one end-to-end seal. The end-to-end seal may be a material diffusion bond, a seal-material bond, or any other suitable bond. For example, the hermetically sealed lamp may have one or more endcaps butt-sealed to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are butt-sealed to the endcap and/or arc envelope. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.Type: ApplicationFiled: December 18, 2002Publication date: June 24, 2004Inventors: Anteneh Kebbede, Bernard P. Bewlay, James A. Brewer, Sylvain S. Coulombe, Sylvia M. DeCarr, Luana E. Iorio, Timothy J. Sommerer, James S. Vartuli
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Patent number: 6329741Abstract: A modification of the traditional unimorph flextensional actuator is provided by replacing the metal shim with an electrically conducting oxide. Comprised of lead zirconate titanate and zinc oxide that is co-sintered, the laminate composite obtains large axial displacements while maintaining moderate axial loads. The varistor properties of zinc oxide dictate that the conductance increases several orders of magnitude when a critical electric field is applied. The versatility of the processing over other actuator system facilitates miniaturization, while maintaining comparable performance characteristics. Functional gradients in the material properties are created in the green body by layering thin tape cast sheets. The unique PZT-zinc oxide composite not only controls the piezoelectric gradient, but permits control of the sintering kinetics leading to the processing of either flat or highly domed structures.Type: GrantFiled: April 30, 1999Date of Patent: December 11, 2001Assignee: The Trustees of Princeton UniversityInventors: James S. Vartuli, David L. Milius, Xiaoping Li, Wei H. Shih, Wan Y. Shih, Robert K. Prud'homme, Ilhan A. Aksay