Patents by Inventor A. P. Shepherd
A. P. Shepherd 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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Publication number: 20240103068Abstract: An apparatus is described for burn-in and/or functional testing of microelectronic circuits of unsingulated wafers. A large number of power, ground, and signal connections can be made to a large number of contacts on a wafer. The apparatus has a cartridge that allows for fanning-in of electric paths. A distribution board has a plurality of interfaces that are strategically positioned to provide a dense configuration. The interfaces are connected through flexible attachments to an array of first connector modules. Each one of the first connector modules can be independently connected to a respective one of a plurality of second connector modules, thereby reducing stresses on a frame of the apparatus. Further features include for example a piston that allows for tight control of forces exerted by terminals onto contacts of a wafer.Type: ApplicationFiled: November 29, 2023Publication date: March 28, 2024Applicant: AEHR TEST SYSTEMSInventors: Donald P. Richmond, II, Kenneth W. Deboe, Frank O. Uher, Jovan Jovanovic, Scott E. Lindsey, Thomas T. Maenner, Patrick M. Shepherd, Jeffrey L. Tyson, Mark C. Carbone, Paul W. Burke, Doan D. Cao, James F. Tomic, Long V. Vu
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Publication number: 20150275033Abstract: A film containing an aromatic polyester with aromatic biphenyl repeating units having the following general Formula I: is provided. The film is annealed and exhibits a relatively isotropic tensile property.Type: ApplicationFiled: October 29, 2014Publication date: October 1, 2015Inventors: Yi Li, Kamlesh P. Nair, Prabuddha Bansal, Tsz Ming Tsang, James P. Shepherd
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Patent number: 9145469Abstract: An aromatic polyester that contains one or more aromatic ester repeating units and one or more biphenyl repeating units is provided. While a wide variety of aromatic ester repeating units may be employed, the polymer is nevertheless “low naphthenic” to the extent that it contains a minimal content of repeating units derived from naphthenic hydroxycarboxylic acids and naphthenic dicarboxylic acids. Despite the absence of a high level of conventional naphthenic acid repeating units, the present inventors have discovered that selective control over the type and relative concentration of the biphenyl repeating units can lead to “low naphthenic” polymers that are not only soluble in certain solvents, but also capable of exhibiting good mechanical properties. Thus, the ability of the resulting polymer to be dissolved or dispersed in various solvents can be enhanced without sacrificing performance.Type: GrantFiled: September 16, 2013Date of Patent: September 29, 2015Assignee: Ticona LLCInventors: Kamlesh P. Nair, Young Shin Kim, James P. Shepherd, Prabuddha Bansal
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Publication number: 20140178705Abstract: A method for coating a non-metallic substrate with a polymer solution that includes an aromatic polyester and a solvent is provided. By selectively controlling the nature of the aromatic polyester, the present inventors have discovered that such polymer solutions can be readily formed, thereby enabling the use of simpler and less complex techniques (e.g., solvent casting) for coating substrates with aromatic polyesters. Moreover, the nature of the polyester and its relative concentration in the solution can also be tailored to achieve coatings that not only adhere well to the substrate, but also possess good thermal and mechanical properties for use in a wide variety of potential applications.Type: ApplicationFiled: September 16, 2013Publication date: June 26, 2014Applicant: Ticona LLCInventors: Kamlesh P. Nair, Prabuddha Bansal, James P. Shepherd
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Publication number: 20140178654Abstract: A prepreg composite that contains a porous substrate impregnated with an aromatic polyester is provided. In addition to possessing a high degree of heat and moisture resistance, the present inventors have also discovered that the nature of the aromatic polyester can be selectively controlled so that it is soluble in a solvent. This allows for the formation of polymer solutions that can be readily employed to impregnate the porous substrate. The nature of the polyester and its relative concentration in the solution can also be tailored to achieve polymers that not only adhere well to the substrate, but also possess good thermal and mechanical properties for use in a wide variety of potential applications.Type: ApplicationFiled: September 16, 2013Publication date: June 26, 2014Applicant: Ticona, LLCInventors: Kamlesh P. Nair, Prabuddha Bansal, James P. Shepherd
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Publication number: 20140142571Abstract: A polymer composition that can be readily melt-extruded into a shaped three-dimensional substrate (e.g., tube) and also applied with a conductive element using a laser direct structuring (“LDS”) process. In this regard, the composition contains a thermotropic liquid crystalline polymer and a laser activatable additive. The specific nature of the polymer and relative concentration of the polymer and additive are selectively controlled so that the resulting composition can possess both a relatively high melt viscosity and melt strength.Type: ApplicationFiled: November 18, 2013Publication date: May 22, 2014Applicant: Ticona LLCInventors: Paul C. Yung, James P. Shepherd
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Publication number: 20140087086Abstract: A powder that contains microparticles formed from an aromatic polyester is provided. The mean size of the microparticles is generally from about 0.1 to about 40 micrometers. The microparticles may also have a shape that is generally spherical in nature. Regardless of the actual size and shape, however, the size distribution of the microparticles may be consistent throughout the powder. For example, at least about 50% by volume of the microparticles may have a mean size within a range of from about 0.1 to about 200 micrometers. Without intending to be limited by theory, the present inventor believes that a certain size and/or size distribution can improve the quality of coatings formed from the powder.Type: ApplicationFiled: September 16, 2013Publication date: March 27, 2014Applicant: Ticona LLCInventors: Kamlesh P. Nair, James P. Shepherd
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Publication number: 20140087149Abstract: An aromatic copoly(ester-sulfone) that contains one or more aromatic ester repeating units and one or more aromatic sulfonyl repeating units is provided. While a wide variety of aromatic ester repeating units may be employed, the polymer is nevertheless “low naphthenic” to the extent that it contains a minimal content of repeating units derived from naphthenic hydroxycarboxylic acids and naphthenic dicarboxylic acids. Despite the absence of a high level of conventional naphthenic acid repeating units, the present inventors have discovered that selective control over the type and relative concentration of the aromatic sulfonyl repeating units can lead to “low naphthenic” polymers that are not only soluble in certain solvents, but also capable of exhibiting good mechanical properties. Thus, the ability of the resulting polymer to be dissolved or dispersed in various solvents can be enhanced without sacrificing performance.Type: ApplicationFiled: September 16, 2013Publication date: March 27, 2014Applicant: Ticona LLCInventors: Kamlesh P. Nair, Young Shin Kim, James P. Shepherd, Prabuddha Bansal
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Publication number: 20140087165Abstract: An aromatic polyester that contains one or more aromatic ester repeating units and one or more biphenyl repeating units is provided. While a wide variety of aromatic ester repeating units may be employed, the polymer is nevertheless “low naphthenic” to the extent that it contains a minimal content of repeating units derived from naphthenic hydroxycarboxylic acids and naphthenic dicarboxylic acids. Despite the absence of a high level of conventional naphthenic acid repeating units, the present inventors have discovered that selective control over the type and relative concentration of the biphenyl repeating units can lead to “low naphthenic” polymers that are not only soluble in certain solvents, but also capable of exhibiting good mechanical properties. Thus, the ability of the resulting polymer to be dissolved or dispersed in various solvents can be enhanced without sacrificing performance.Type: ApplicationFiled: September 16, 2013Publication date: March 27, 2014Applicant: Ticona LLCInventors: Kamlesh P. Nair, Young Shin Kim, James P. Shepherd, Prabuddha Bansal
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Patent number: 7492404Abstract: An image sensor includes a substrate; a plurality of pixels on the substrate, one or more of the pixels comprises (i) first and second charge-storage regions having at least one photosensitive area; (ii) a lateral overflow drain; (iii) a first lateral overflow gate adjacent the first charge-storage regions that passes substantially all charges from the first charge-storage region to the lateral overflow drain; and (iv) a second lateral gate adjacent the second charge-storage region that passes excess photo-generated charge into the lateral overflow drain for blooming control.Type: GrantFiled: February 7, 2005Date of Patent: February 17, 2009Assignee: Eastman Kodak CompanyInventors: Eric G. Stevens, John P. Shepherd, David N. Nichols
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Patent number: 7423668Abstract: A method for calibrating an image sensor having multiple outputs, the method includes the steps of capturing an image on the image sensor, injecting one or more substantially identical pairs of signals into corresponding portions of the captured image, reading out the captured image with the injected signals into two or more outputs, and comparing two substantially identical signals from corresponding portions of the image, which comparison is used for calibrating the image.Type: GrantFiled: July 11, 2005Date of Patent: September 9, 2008Assignee: Eastman Kodak CompanyInventors: Eric J. Meisenzahl, Edward T. Nelson, John P. Shepherd
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Patent number: 7298407Abstract: A method for reducing shutter latency while maintaining low dark current in the imager and minimizing energy consumption in a digital camera, the method including the steps of providing an imager operating in accumulation mode; and substantially continuous flushing of charges from the imager before capturing an exposure of an image with a time between vertical transfers greater than or equal to time between vertical transfers during normal image readout so that, if continuous flushing for a time necessary to readout substantially all rows of pixels has occurred, the exposure may be captured with substantially zero latency.Type: GrantFiled: October 10, 2002Date of Patent: November 20, 2007Assignee: Eastman Kodak CompanyInventors: Gregory O. Moberg, John P. Shepherd, Raymond J. Bouvy, John P. McCarten
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Patent number: 7274391Abstract: A digital camera includes a CCD operating with accumulation mode clocking for capturing an electronic representation of an image; and two or more clocks operatively and respectively connected to each phase of the two or more phases for initiating flushing of excess current, wherein, to initiate flushing, a time the clocks are at a high level are substantially the same, and a time the clocks are at a low level can be selected at any duration between a minimum width at which dark current starts to substantially increase and twice its normal operating duration during image readout and for reducing power consumption while retaining minimum dark current and for having a substantially uniform dark field.Type: GrantFiled: October 10, 2002Date of Patent: September 25, 2007Assignee: Eastman Kodak CompanyInventors: John P. Shepherd, Eric J. Meisenzahl, Richard Brolly
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Patent number: 7075628Abstract: A method and apparatus that allows accurate spectrophotometric determination of the concentrations of various hemoglobin species in whole undiluted blood. The invention employs 1) an optical apparatus designed to maximize the true optical absorbance of whole blood and to minimize the effects of light scattering on the spectrophotometric measurements of the concentrations of various constituent components, and 2) methods to correct the hemoglobin concentration measurements for light scattering and for the effects of the finite bandwidth of the substantially monochromatic light. In the optical apparatus optical parameters, such as sample thickness, detector size and shape, sample-to-detector distance, wavelengths, monochromicity, and maximum angle of light capture by detector, are selected so as to minimize the contribution of light scattering to maximize the contribution of true optical absorbance.Type: GrantFiled: December 6, 2002Date of Patent: July 11, 2006Assignee: Board of Regents, The University of Texas SystemInventors: A. P. Shepherd, John M. Steinke
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Patent number: 6834151Abstract: An optical waveguide with at least a guiding lamina (10) of optical material bonded by direct interfacial bonding to a superstructure lamina (20) of optical material, in which regions of the guiding lamina have modified optical properties so as to define a light guiding path along the guiding lamina. In a particular example, a periodically poled LiNbO3 planar waveguide is buried in LiTaO3 by direct interfacial bonding and precision polishing techniques and used in an optical frequency doubling system.Type: GrantFiled: February 13, 2001Date of Patent: December 21, 2004Assignee: QinetiQ LimitedInventors: Peter G R Smith, Graeme W Ross, David C Hanna, David P Shepherd, Corin B E Gawith
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Patent number: 6803960Abstract: An optically operated test structure for testing the charge transfer efficiency (CTE) of a charge coupled device (CCD) solid-state image sensor. A solid-state image sensor includes a substrate of a semiconductor material of one conductivity type having a surface. A plurality of spaced, parallel CCDs are in the substrate at the surface. Each CCD includes a channel region and a plurality of conductive gates extending across and insulated from the channel region. The conductive gates extend laterally across the channel regions of all of the CCDs and divide the channel regions into a plurality of phases and pixels. A drain region of the opposite conductivity type is in the substrate at the surface and extends along the channel region of at least one of the CCDs. A simply connected (rectangular) region of the plurality of spaced, parallel CCDs is photoactive. The CCDs outside this photoactive region are typically covered with metal or some other optically opaque material.Type: GrantFiled: December 14, 2000Date of Patent: October 12, 2004Assignee: Eastman Kodak CompanyInventors: John P. Shepherd, Eric G. Stevens
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Patent number: 6666990Abstract: The present invention relates to a stretchable polymer consisting essentially of recurring units derived from para-oxybenzoyl, 6-oxy-2-naphthoyl and meta-oxybenzoyl. The invention also relates to a process for stretching a multilayer laminate comprising the steps of providing a multilayer laminate comprising a layer of a thermoplastic and a layer of the stretchable polymer, and stretching the laminate greater than about 100% elongation at a temperature less than about 200° C.Type: GrantFiled: February 14, 2001Date of Patent: December 23, 2003Assignee: Ticona LLCInventors: James P. Shepherd, H. Clay Linstid, III, Vincent J. Provino
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Publication number: 20030202170Abstract: A method and apparatus which allow accurate spectrophotometric determinations of the concentrations of various hemoglobin species in whole blood without hemolysis or dilution. To overcome the complex optical properties of whole blood, the invention employs 1) an optical apparatus designed to maximize the true optical absorbance of whole blood and to minimize the effects of light scattering on the spectrophotometric measurements of the concentrations of various constituent components, and 2) methods to correct the hemoglobin concentration measurements for light scattering and for the effects of the finite bandwidth of the substantially monochromatic light.Type: ApplicationFiled: December 6, 2002Publication date: October 30, 2003Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: A. P. Shepherd, John M. Steinke
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Publication number: 20030133031Abstract: A method for reducing shutter latency while maintaining low dark current in the imager and minimizing energy consumption in a digital camera, the method including the steps of providing an imager operating in accumulation mode; and substantially continuous flushing of charges from the imager before capturing an exposure of an image with a time between vertical transfers greater than or equal to time between vertical transfers during normal image readout so that, if continuous flushing for a time necessary to readout substantially all rows of pixels has occurred, the exposure may be captured with substantially zero latency.Type: ApplicationFiled: October 10, 2002Publication date: July 17, 2003Applicant: Eastman Kodak CompanyInventors: Gregory O. Moberg, John P. Shepherd, Raymond J. Bouvy, John P. McCarten
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Patent number: D701455Type: GrantFiled: May 14, 2012Date of Patent: March 25, 2014Inventors: Michael P. Shepherd, Cheri Dunn