Patents by Inventor X. Fang
X. Fang 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: 20230107666Abstract: Materials and methods for cell-mimetics having mechanical properties of biological neural axons are provided. A cell-mimetic device includes an array of fibers comprised of hexanediol diacrylate (HDDA) or an HDDA derivative, and at least one derivative of polyethylene glycol (PEG) selected from the group consisting of: PEG-acrylate, PEG-diacrylate, and any multi-arm PEG-acrylate.Type: ApplicationFiled: December 7, 2022Publication date: April 6, 2023Inventors: Daniela Espinosa-Hoyos, Anna E. Jagielska, Huifeng Du, Nicholas X. Fang, Krystyn J. Van Vliet
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Patent number: 11535826Abstract: Materials and methods for cell-mimetics having mechanical properties of biological neural axons are provided. A cell-mimetic device includes an array of fibers comprised of hexanediol diacrylate (HDDA) or an HDDA derivative, and at least one derivative of polyethylene glycol (PEG) selected from the group consisting of: PEG-acrylate, PEG-diacrylate, and any multi-arm PEG-acrylate.Type: GrantFiled: May 9, 2018Date of Patent: December 27, 2022Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Daniela Espinosa-Hoyos, Anna E. Jagielska, Huifeng Du, Nicholas X. Fang, Krystyn J. Van Vliet
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Publication number: 20180327715Abstract: Materials and methods for cell-mimetics having mechanical properties of biological neural axons are provided. A cell-mimetic device includes an array of fibers comprised of hexanediol diacrylate (HDDA) or an HDDA derivative, and at least one derivative of polyethylene glycol (PEG) selected from the group consisting of: PEG-acrylate, PEG-diacrylate, and any multi-arm PEG-acrylate.Type: ApplicationFiled: May 9, 2018Publication date: November 15, 2018Inventors: Daniela Espinosa-Hoyos, Anna E. Jagielska, Huifeng Du, Nicholas X. Fang, Krystyn J. Van Vliet
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Patent number: 9959005Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: GrantFiled: May 22, 2017Date of Patent: May 1, 2018Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Wendy X. Fang, Ing-Yih James Wang
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Publication number: 20170255302Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: ApplicationFiled: May 22, 2017Publication date: September 7, 2017Inventors: Wendy X. Fang, Ing-Yih James Wang
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Patent number: 9658730Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: GrantFiled: August 24, 2015Date of Patent: May 23, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Wendy X. Fang, Ing-Yih James Wang
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Patent number: 9238607Abstract: The invention concerns a process for the catalytic production of unsaturated aldehydes by reacting an olefin in the presence of carbon monoxide and hydrogen, a rhodium compound and organic phosphorus-containing ligands in an organic solvent as well as a co-catalyst formed from a weak organic acid and an organic amine.Type: GrantFiled: January 20, 2015Date of Patent: January 19, 2016Assignee: EVONIK INDUSTRIES AGInventors: Matthias Beller, Ralf Jackstell, X. Fang
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Publication number: 20150363028Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: ApplicationFiled: August 24, 2015Publication date: December 17, 2015Inventors: Wendy X. Fang, Ing-Yih James Wang
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Patent number: 9116590Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: GrantFiled: August 22, 2012Date of Patent: August 25, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Wendy X. Fang, Ing-Yih James Wang
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Patent number: 8980656Abstract: A new method for forming an array of high aspect ratio semiconductor nanostructures entails positioning a surface of a stamp comprising a solid electrolyte in opposition to a conductive film disposed on a semiconductor substrate. The surface of the stamp includes a pattern of relief features in contact with the conductive film so as to define a film-stamp interface. A flux of metal ions is generated across the film-stamp interface, and a pattern of recessed features complementary to the pattern of relief features is created in the conductive film. The recessed features extend through an entire thickness of the conductive film to expose the underlying semiconductor substrate and define a conductive pattern on the substrate. The stamp is removed, and material immediately below the conductive pattern is selectively removed from the substrate. Features are formed in the semiconductor substrate having a length-to-width aspect ratio of at least about 5:1.Type: GrantFiled: October 14, 2010Date of Patent: March 17, 2015Assignee: The Board of Trustees of the University of IllinoisInventors: Xiuling Li, Nicholas X. Fang, Placid M. Ferreira, Winston Chern, Ik Su Chun, Keng Hao Hsu
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Publication number: 20130052762Abstract: A new method for forming an array of high aspect ratio semiconductor nanostructures entails positioning a surface of a stamp comprising a solid electrolyte in opposition to a conductive film disposed on a semiconductor substrate. The surface of the stamp includes a pattern of relief features in contact with the conductive film so as to define a film-stamp interface. A flux of metal ions is generated across the film-stamp interface, and a pattern of recessed features complementary to the pattern of relief features is created in the conductive film. The recessed features extend through an entire thickness of the conductive film to expose the underlying semiconductor substrate and define a conductive pattern on the substrate. The stamp is removed, and material immediately below the conductive pattern is selectively removed from the substrate. Features are formed in the semiconductor substrate having a length-to-width aspect ratio of at least about 5:1.Type: ApplicationFiled: October 14, 2010Publication date: February 28, 2013Inventors: Xiuling Li, Nicholas X. Fang, Placid M. Ferreira, Winston Chern, Ik Su Chun, Keng Hao Hsu
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Publication number: 20130044079Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: ApplicationFiled: August 22, 2012Publication date: February 21, 2013Applicant: Texas Instruments IncorporatedInventors: Wendy X. Fang, Ing-Yih James Wang
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Patent number: 8269745Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: GrantFiled: January 13, 2010Date of Patent: September 18, 2012Assignee: Texas Instruments IncorporatedInventors: Wendy X. Fang, Ing-Yih James Wang
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Patent number: 8117315Abstract: An apparatus, system, and method are disclosed for improving the loading time of a web page. The present invention includes selecting archivable objects in a web page for inclusion in an archive file, the web page referencing at least one archivable object and generating the archive file from the selected archivable objects. A web page is generated, the web page configured to display in a script enabled web browser, wherein the web page comprises executable code configured to retrieve the archive file, executable code configured to unpackage the archivable objects from the archive file, and executable code configured to render the web page in a web browser using the unpackaged archivable objects from the archive file. Beneficially, the apparatus, system, and method improve the load time for web pages.Type: GrantFiled: July 20, 2007Date of Patent: February 14, 2012Assignee: International Business Machines CorporationInventors: Catherine C. Diep, Xing X. Fang, Dong J. Lan, Sheng Lu, Luis J. Ostdiek, Qing B. Wang, Meng Ye
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Patent number: 7998330Abstract: Disclosed herein are electrochemical fabrication platforms for making structures, arrays of structures and functional devices having selected nanosized and/or microsized physical dimensions, shapes and spatial orientations. Methods, systems and system components use an electrochemical stamping tool such as solid state polymeric electrolytes for generating patterns of relief and/or recessed features exhibiting excellent reproducibility, pattern fidelity and resolution on surfaces of solid state ionic conductors and in metal. Electrochemical stamping tools are capable high throughput patterning of large substrate areas, are compatible with commercially attractive manufacturing pathways to access a range of functional systems and devices including nano- and micro-electromechanical systems, sensors, energy storage devices, metal masks for printing, interconnects, and integrated electronic circuits.Type: GrantFiled: May 19, 2008Date of Patent: August 16, 2011Assignee: The Board of Trustees of the University of IllinoisInventors: Nicholas X. Fang, Placid M. Ferreira, Keng Hao Hsu, Peter Lee Schultz, Kyle E. Jacobs, Anil Kumar
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Publication number: 20110169745Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.Type: ApplicationFiled: January 13, 2010Publication date: July 14, 2011Inventors: Wendy X. Fang, Ing-Yih James Wang
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Publication number: 20110033887Abstract: In an aspect, the present invention uses projection micro stereolithography to generate three-dimensional microvessel networks that are capable of supporting and fostering growth of a cell population. For example, provided is a method of making a microvascularized bioreactor via layer-by-layer polymerization of a photocurable liquid composition with repeated patterns of illumination, wherein each layer corresponds to a layer of the desired microvessel network. The plurality of layers are assembled to make a microvascular network. Support structures having different etch rates than the structures that make up the network provides access to manufacturing arbitrary geometries that cannot be made by conventional methods. A cell population is introduced to the external wall of the network to obtain a microvascularized bioreactor. Provided are various methods and related bioreactors, wherein the network wall has a permeability to a biological material that varies within and along the network.Type: ApplicationFiled: September 24, 2008Publication date: February 10, 2011Inventors: Nicholas X. Fang, Chunguang Xia, Andrew Cox
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Publication number: 20090050487Abstract: Disclosed herein are electrochemical fabrication platforms for making structures, arrays of structures and functional devices having selected nanosized and/or microsized physical dimensions, shapes and spatial orientations. Methods, systems and system components use an electrochemical stamping tool such as solid state polymeric electrolytes for generating patterns of relief and/or recessed features exhibiting excellent reproducibility, pattern fidelity and resolution on surfaces of solid state ionic conductors and in metal. Electrochemical stamping tools are capable high throughput patterning of large substrate areas, are compatible with commercially attractive manufacturing pathways to access a range of functional systems and devices including nano- and micro-electromechanical systems, sensors, energy storage devices, metal masks for printing, interconnects, and integrated electronic circuits.Type: ApplicationFiled: May 19, 2008Publication date: February 26, 2009Inventors: Nicholas X. FANG, Placid M. FERREIRA, Keng Hao HSU, Peter Lee SCHULTZ, Kyle E. JACOBS, Anil KUMAR
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Publication number: 20080057327Abstract: The present invention relates to ceramic cutting tools, such as, a aluminum oxide with zirconium oxide ceramic cutting tool with diffusion bonding enhanced layer and CVD coatings, particularly useful for machining modem metal materials. The method comprises a chemical reaction with a mixture including nitrogen and aluminum chloride introduced to form a diffusion bonding enhanced layer between the ceramic substrate and the CVD coatings. Thus formed diffusion bonding is highly adherent to the aluminum oxide with zirconium oxide ceramic substrate and significantly enhances the CVD coating properties, and thus improving the machining performance in terms of the tool life of zirconium-based aluminum oxide with zirconium oxide ceramic cutting tools.Type: ApplicationFiled: May 5, 2005Publication date: March 6, 2008Applicant: TDY INDUSTRIES, INC.Inventors: X. Fang, David Wills, Gilles Festeau
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Publication number: 20070189864Abstract: A cutting insert for milling operations, such as, face milling, slot milling, plunge milling, and ramping operations. The cutting insert exhibits a combination of favorable cutting edge strength, and unique cutting edge geometry, thus, allowing milling operations at relatively high feed rates. The cutting insert includes at least four cutting edges, wherein at least one of the cutting edges is a convex cutting edge. Certain embodiments of square cutting inserts will have four convex cutting edges which may be connected by nose corners. The convex cutting edge may comprise at least one of a circular arc, a portion of an ellipse, a portion of a parabola, a multi-segment spline curve, a straight line, or combinations of these. Wherein the convex cutting edge comprises a circular arc, the circular arc may have a radius greater than or equal to two times a radius of the largest circle that may be inscribed on the top surface.Type: ApplicationFiled: April 5, 2007Publication date: August 16, 2007Applicant: TDY Industries, Inc.Inventors: Gilles Festeau, Jean-Luc Dufour, X. Fang, David Wills