Patents by Inventor Zhi Chu
Zhi Chu 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: 8778706Abstract: Encapsulated LEDs can be made by taking a mold tool defining a cavity that defines a lens shape and providing a patterned release film defining the inverse of a microstructure in a surface of the film. The patterned release film is conformed to the cavity of the mold tool. An LED chip is placed in a spaced relationship from the patterned release film in the cavity. A resin is then introduced into the space between the LED chip and the patterned release film in the cavity. The resin is cured in the space between the LED chip and the patterned release film in the cavity while contact is maintained between the patterned release film and the curing resin. The encapsulated LED is then freed from the mold tool and the patterned release film.Type: GrantFiled: November 5, 2010Date of Patent: July 15, 2014Assignee: Luminit LLCInventors: Philip Yi Zhi Chu, Stanley Tafeng Kao, Lev Katsenelenson
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Patent number: 8551391Abstract: A method of making a microneedle array structure (20) comprising a plurality of simultaneously formed microneedles (24), each microneedle (24) having a protrusion (32) and a passageway (34) extending therethrough. The method comprises the steps of pressing an embossable sheet material between a complimentary tools and radiantly heating the sheet material using radiant energy from a radiant energy source. One tool is relatively-radiantly-transparent, and another tool and/or the sheet material is relatively-radiantly-absorptive.Type: GrantFiled: February 3, 2005Date of Patent: October 8, 2013Assignee: Avery Dennison CorporationInventors: Eng-Pi Chang, Philip Yi Zhi Chu, Hsiao Ken Chuang, Kejian (Kevin) Huang, Michael Lang, Reza Mehrabi, Ronald F. Sieloff, Karen L. Spilizewski, Mark Wisniewski
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Patent number: 8154798Abstract: The present disclosure reveals a reflective, front-projection screen designed to faithfully and accurately display the images from state-of-the-art (SOTA) and next-generation 2D and 3D motion-picture projectors, such as those found in large-capacity public movie theaters, home theaters, offices, and for use with portable projection systems for consumer and commercial applications. In particular it discloses cinema-size light shaping 3D projection screens with front-surface microstructures and horizontal viewing angles in the range of 90 to 120 degrees.Type: GrantFiled: December 1, 2010Date of Patent: April 10, 2012Assignee: Luminit LLCInventors: Leo Katsenelenson, Stanley Tafeng Kao, Philip Yi Zhi Chu, Engin B. Arik, Edward M. Kaiser, Thomas C Forrester
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Publication number: 20110157695Abstract: The present disclosure reveals a reflective, front-projection screen designed to faithfully and accurately display the images from state-of-the-art (SOTA) and next-generation 2D and 3D motion-picture projectors, such as those found in large-capacity public movie theaters, home theaters, offices, and for use with portable projection systems for consumer and commercial applications. In particular it discloses cinema-size light shaping 3D projection screens with front-surface microstructures and horizontal viewing angles in the range of 90 to 120 degrees.Type: ApplicationFiled: December 1, 2010Publication date: June 30, 2011Applicant: LUMINIT, LLCInventors: Leo Katsenelenson, Stanley Tafeng Kao, Philip Yi Zhi Chu, Engin B. Arik, Edward M. Kaiser, Thomas C. FORRESTER
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Publication number: 20110108874Abstract: Encapsulated LEDs can be made by taking a mold tool defining a cavity that defines a lens shape and providing a patterned release film defining the inverse of a microstructure in a surface of the film. The patterned release film is conformed to the cavity of the mold tool. An LED chip is placed in a spaced relationship from the patterned release film in the cavity. A resin is then introduced into the space between the LED chip and the patterned release film in the cavity. The resin is cured in the space between the LED chip and the patterned release film in the cavity while contact is maintained between the patterned release film and the curing resin. The encapsulated LED is then freed from the mold tool and the patterned release film.Type: ApplicationFiled: November 5, 2010Publication date: May 12, 2011Applicant: Luminit, LLCInventors: Philip Yi Zhi Chu, Stanley Tafeng Kao, Lev Katsenelenson
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Patent number: 7514045Abstract: A microchamber structure (100) comprising a base layer (120), a lid layer (130), and at least one microchamber (140) having a cross-sectional shape with a depth (d) of less than 1000 microns and a width (w) of less than 1000 microns. The base layer (120) includes a depression (122) and the lid layer (104) includes a projection (132) positioned within the depression (122) to together define the cross-sectional shape of the microchamber (140).Type: GrantFiled: January 17, 2003Date of Patent: April 7, 2009Assignee: Avery Dennison CorporationInventors: Craig S. Corcoran, Cindy Chia-Wen Chiu, William J. Jaecklein, Dong-Tsai Hseih, Eng-Pi Chang, Le-Hoa Hong, Zhisong Huang, Michael Lang, Ronald Sieloff, Philip Yi Zhi Chu
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Publication number: 20080274225Abstract: A method of embossing a sheet material includes: heating at least a portion of the sheet directly or indirectly with radiant energy from a radiant energy source; pressing a tool against the heated portion of the sheet, thereby patterning a surface of the sheet; and separating the sheet and the tool. The radiant energy may travel through a solid material that is relatively transparent to radiation, on its way to being absorbed by a relatively-absorptive material. The relatively-transparent material may be an unheated portion of the sheet, and the relatively-absorptive material may be either the tool or the heated portion of the sheet. Alternatively, the relatively-transparent material may be the tool, and the relatively-absorptive material may be all or part of the sheet. The method may be performed as one or more roll-to-roll operations.Type: ApplicationFiled: July 17, 2008Publication date: November 6, 2008Inventors: Rishikesh K. Bharadwai, Eng-Pi Chang, Philip Yi Zhi Chu, Hsiao Ken Chuanq, David N. Edwards, Robert J. Fermin, Ali R. Mehrabi, Reza Mehrabi, Ronald F. Sieloff, Chunhwa Wang
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Patent number: 7416692Abstract: A method of embossing a sheet material includes: heating at least a portion of the sheet directly or indirectly with radiant energy from a radiant energy source; pressing a tool against the heated portion of the sheet, thereby patterning a surface of the sheet; and separating the sheet and the tool. The radiant energy may travel through a solid material that is relatively transparent to radiation, on its way to being absorbed by a relatively-absorptive material. The relatively-transparent material may be an unheated portion of the sheet, and the relatively-absorptive material may be either the tool or the heated portion of the sheet. Alternatively, the relatively-transparent material may be the tool, and the relatively-absorptive material may be all or part of the sheet. The method may be performed as one or more roll-to-roll operations.Type: GrantFiled: January 31, 2005Date of Patent: August 26, 2008Assignee: Avery Dennison CorporationInventors: Rishikash K. Bharadwai, Eng-Pi Chang, Philip Yi Zhi Chu, Hsiao Ken Chuang, David N. Edwards, Robert J. Fermin, Ali R. Mehrabi, Reza Mehrabi, Ronald F. Sieloff, Chunhwa Wang
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Patent number: 7303809Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.Type: GrantFiled: September 17, 2001Date of Patent: December 4, 2007Assignee: 3M Innovative Properties CompanyInventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
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Publication number: 20070134764Abstract: The invention disclosed in this patent document relates to transmembrane receptors, more particularly to a human G protein-coupled receptor for which the endogenous ligand is unknown, and to mutated (non-endogenous) versions of the human GPCRs for evidence of constitutive activity.Type: ApplicationFiled: November 20, 2006Publication date: June 14, 2007Applicant: Arena Pharmaceuticals, Inc.Inventors: Ruoping Chen, Zhi Chu, Huong Dang, Kevin Lowitz, Cameron Pride
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Publication number: 20060234350Abstract: The invention disclosed in this patent document relates to transmembrane receptors, more particularly to a human G protein-coupled receptor for which the endogenous ligand is unknown, and to mutated (non-endogenous) versions of the human GPCRs for evidence of constitutive activity.Type: ApplicationFiled: June 22, 2006Publication date: October 19, 2006Applicant: Arena Pharmaceuticals, Inc.Inventors: Ruoping Chen, Zhi Chu, Huong Dang, Kevin Lowitz, Cameron Pride
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Publication number: 20030232174Abstract: A substrate having embossed thereon a plurality of shaped recesses of a predetermined precise geometric profile, each recess having a flat bottom surface having a major dimension of about 500 &mgr;m or less, the substrate being capable of undergoing a thermal cycle of about one hour at about 150° C. while maintaining about ±10 &mgr;m or less dimensional stability of the embossed shaped indentations, and wherein the substrate comprises an amorphous thermoplastic material. During the thermal cycle the substrate has an elastic modulus greater than about 1010 dynes/cm2 and a viscoelastic index of less than about 0.1.Type: ApplicationFiled: April 17, 2003Publication date: December 18, 2003Applicant: Avery Dennison CorporationInventors: Pi Chang, Philip Yi Zhi Chu, Dong Hseih, Robert M. Pricone, W. Scott Thielman
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Publication number: 20030180190Abstract: A microchamber structure (100) comprising a base layer (120), a lid layer (130), and at least one microchamber (140) having a cross-sectional shape with a depth (d) of less than 1000 microns and a width (w) of less than 1000 microns. The base layer (120) includes a depression (122) and the lid layer (104) includes a projection (132) positioned within the depression (122) to together define the cross-sectional shape of the microchamber (140).Type: ApplicationFiled: January 17, 2003Publication date: September 25, 2003Inventors: Craig S. Corcoran, Cindy Chia-Wen Chiu, William J. Jaecklein, Dong-Tsai Hseih, Eng-Pi Chang, Le-Hoa Hong, Zhisong Huang, Michael Lang, Ronald Sieloff, Philip Yi Zhi Chu
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Publication number: 20030155656Abstract: An anisotropically conductive structure for providing electrical interconnection between electronic components, and the process for making such anisotropically conductive structure. The anisotropically conductive structure includes a dielectric matrix having a substantially uniform thickness; an array of vias extending into or through the matrix; a plurality of conductive elements, wherein individual via contains at least one conductive element; a first adhesive layer adhered to the first major surface of the matrix; and optionally, a second adhesive layer adhered to the second major surface of the matrix.Type: ApplicationFiled: January 17, 2003Publication date: August 21, 2003Inventors: Cindy Chia-Wen Chiu, David Hsein-Pin Chen, Philip Yi Zhi Chu, Hsiao Ken Chuang, H. Paul Barker
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Publication number: 20020149107Abstract: A substrate having embossed thereon a plurality of shaped recesses of a predetermined precise geometric profile, each recess having a flat bottom surface having a major dimension of about 500 &mgr;m or less, the substrate being capable of undergoing a thermal cycle of about one hour at about 150 ° C. while maintaining about ±10 &mgr;m or less dimensional stability of the embossed shaped indentations, and wherein the substrate comprises an amorphous thermoplastic material. During the thermal cycle the substrate has an elastic modulus greater than about 1010 dynes/cm2 and a viscoelastic index of less than about 0.1.Type: ApplicationFiled: February 2, 2001Publication date: October 17, 2002Applicant: Avery Dennison CorporationInventors: Pi Chang, Philip Yi Zhi Chu, Dong Hseih, Robert M. Pricone, W. Scott Thielman
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Publication number: 20020114901Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.Type: ApplicationFiled: September 17, 2001Publication date: August 22, 2002Inventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
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Publication number: 20010050222Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.Type: ApplicationFiled: January 20, 1998Publication date: December 13, 2001Inventors: HYUNG-CHUL CHOI, YI ZHI CHU, LINDA S HEATH, WILLIAM K SMYTH