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).

  • Patent number: 8778706
    Abstract: 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: Grant
    Filed: November 5, 2010
    Date of Patent: July 15, 2014
    Assignee: Luminit LLC
    Inventors: Philip Yi Zhi Chu, Stanley Tafeng Kao, Lev Katsenelenson
  • Patent number: 8551391
    Abstract: 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: Grant
    Filed: February 3, 2005
    Date of Patent: October 8, 2013
    Assignee: Avery Dennison Corporation
    Inventors: 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
  • Patent number: 8154798
    Abstract: 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: Grant
    Filed: December 1, 2010
    Date of Patent: April 10, 2012
    Assignee: Luminit LLC
    Inventors: Leo Katsenelenson, Stanley Tafeng Kao, Philip Yi Zhi Chu, Engin B. Arik, Edward M. Kaiser, Thomas C Forrester
  • Publication number: 20110157695
    Abstract: 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: Application
    Filed: December 1, 2010
    Publication date: June 30, 2011
    Applicant: LUMINIT, LLC
    Inventors: Leo Katsenelenson, Stanley Tafeng Kao, Philip Yi Zhi Chu, Engin B. Arik, Edward M. Kaiser, Thomas C. FORRESTER
  • Publication number: 20110108874
    Abstract: 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: Application
    Filed: November 5, 2010
    Publication date: May 12, 2011
    Applicant: Luminit, LLC
    Inventors: Philip Yi Zhi Chu, Stanley Tafeng Kao, Lev Katsenelenson
  • Patent number: 7514045
    Abstract: 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: Grant
    Filed: January 17, 2003
    Date of Patent: April 7, 2009
    Assignee: Avery Dennison Corporation
    Inventors: 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
  • Publication number: 20080274225
    Abstract: 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: Application
    Filed: July 17, 2008
    Publication date: November 6, 2008
    Inventors: 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
  • Patent number: 7416692
    Abstract: 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: Grant
    Filed: January 31, 2005
    Date of Patent: August 26, 2008
    Assignee: Avery Dennison Corporation
    Inventors: 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
  • Patent number: 7303809
    Abstract: 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: Grant
    Filed: September 17, 2001
    Date of Patent: December 4, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
  • Publication number: 20070134764
    Abstract: 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: Application
    Filed: November 20, 2006
    Publication date: June 14, 2007
    Applicant: Arena Pharmaceuticals, Inc.
    Inventors: Ruoping Chen, Zhi Chu, Huong Dang, Kevin Lowitz, Cameron Pride
  • Publication number: 20060234350
    Abstract: 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: Application
    Filed: June 22, 2006
    Publication date: October 19, 2006
    Applicant: Arena Pharmaceuticals, Inc.
    Inventors: Ruoping Chen, Zhi Chu, Huong Dang, Kevin Lowitz, Cameron Pride
  • Publication number: 20030232174
    Abstract: 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: Application
    Filed: April 17, 2003
    Publication date: December 18, 2003
    Applicant: Avery Dennison Corporation
    Inventors: Pi Chang, Philip Yi Zhi Chu, Dong Hseih, Robert M. Pricone, W. Scott Thielman
  • Publication number: 20030180190
    Abstract: 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: Application
    Filed: January 17, 2003
    Publication date: September 25, 2003
    Inventors: 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
  • Publication number: 20030155656
    Abstract: 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: Application
    Filed: January 17, 2003
    Publication date: August 21, 2003
    Inventors: Cindy Chia-Wen Chiu, David Hsein-Pin Chen, Philip Yi Zhi Chu, Hsiao Ken Chuang, H. Paul Barker
  • Publication number: 20020149107
    Abstract: 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: Application
    Filed: February 2, 2001
    Publication date: October 17, 2002
    Applicant: Avery Dennison Corporation
    Inventors: Pi Chang, Philip Yi Zhi Chu, Dong Hseih, Robert M. Pricone, W. Scott Thielman
  • Publication number: 20020114901
    Abstract: 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: Application
    Filed: September 17, 2001
    Publication date: August 22, 2002
    Inventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
  • Publication number: 20010050222
    Abstract: 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: Application
    Filed: January 20, 1998
    Publication date: December 13, 2001
    Inventors: HYUNG-CHUL CHOI, YI ZHI CHU, LINDA S HEATH, WILLIAM K SMYTH