Patents by Inventor Hongyu Chen

Hongyu Chen 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: 7679416
    Abstract: The invention is directed to a method for clock distribution and VLSI circuits include a clock distribution network. In a method of the invention, a transmission lines are patterned as to connect a clock tree and a periodic waveform clock, preferably a sine waveform, is used to control clock skew, even at frequencies extending into the gigahertz range. In an exemplary embodiment of the invention, an overlay includes differential pairs of transmission lines that connect the drivers of a clock distribution tree. In preferred embodiments of the invention, an H-tree clock distribution scheme is overlayed with a spiral of transmission lines, each realized by a differential conductors and driven using a sinusoidal standing wave to distribute global clock signals into local regions of the chip. Each transmission line connects drivers in the H-tree that are at the same level of the H-tree.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: March 16, 2010
    Assignee: The Regents of the University of California
    Inventors: Chung-Kuan Cheng, Hongyu Chen
  • Patent number: 7622779
    Abstract: A multi-celled chip. The chip includes a plurality of hexagonal cells arranged in an array. A plurality of interconnects including Y's connect the cells in clusters of three cells each, so that each of the cells is interconnected.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: November 24, 2009
    Assignee: The Regents of the University of California
    Inventors: Chung-Kuan Cheng, Hongyu Chen, Bo Yao, Ronald Graham, Esther Y. Cheng, Feng Zhou
  • Publication number: 20090247033
    Abstract: A fiber is obtainable from or comprises a blend of a propylene based polymer and an ethylene/?-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481?1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven, knitted or non-woven fabrics can be made from such fibers.
    Type: Application
    Filed: January 10, 2008
    Publication date: October 1, 2009
    Inventors: Hong Peng, Hongyu Chen, Yuen-Yuen D. Chiu, Shih-Yaw Lai, Eddy I. Garcia-Meitin, Charles F. Diehl
  • Patent number: 7504347
    Abstract: A fiber is obtainable from or comprises a propylene/?-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481-1629 (d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: March 17, 2009
    Assignee: Dow Global Technologies Inc.
    Inventors: Benjamin C. Poon, Yunwa W. Cheung, Shih-Yaw Lai, Ashish Sen, Hongyu Chen, Yuen-Yuen D. Chiu, Rajen M. Patel, Andy C. Chang, Antonios K. Doufas, Hong Peng
  • Publication number: 20090042472
    Abstract: A fiber is obtainable from or comprises an ethylene/?-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and (1) cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481?1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.
    Type: Application
    Filed: March 15, 2006
    Publication date: February 12, 2009
    Inventors: Benjamin C. Poon, Yunwa W. Cheung, Shih-Yaw Lai, Ashish Sen, Hongyu Chen, Yuen-Yuen D. Chiu, Rajen M. Patel, Andy C. Chang, Antonios K. Doufas, Hong Peng
  • Publication number: 20080299857
    Abstract: Heavy weight stretch fabrics comprising ethylene/?-olefin interpolymer are described. The fabric often has a weight of at least 10 ounces per square yard measured according to ASTM 3776 and has a stretch of at least 10 percent measured according to ASTM D3107. These fabrics exhibit excellent chemical, resistance (for example chlorine or caustic resistance) and durability, that is they retain their shape and feel over repeated exposure to processing conditions, such as stone-washing, dye-stripping, PET-dyeing and the like, and industrial laundry conditions.
    Type: Application
    Filed: November 30, 2007
    Publication date: December 4, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Gregory G. Harding, Hongyu Chen, Alberto Lora Lamia, Jerry C. Wang, Bernard C. Dems, Jose M. Rego, Maria P. Martinelli, Chi Auyeung, Pablo Verdu
  • Publication number: 20080261471
    Abstract: A reinforced composite article and method for making the same. The article and method employ at least one elongated member as a reinforcement phase. Specific elongated members are multiple layer structures wherein the layers are each polyolefinic (e.g., at least one of the layers may be a propylene-based polymer, such as a propylene-ethylene copolymer, an isotactic polypropylene homopolymer, or a combination thereof). Optionally, at least one of the layers may include a non-migratory process aid or surface modifier agent. An intermediate form including the elongated member may made and processed (for example, with a step of consolidation) to form a composite article.
    Type: Application
    Filed: October 20, 2005
    Publication date: October 23, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Hongyu Chen, Wing S. Chum, Ronald Wevers, David G. McLeod
  • Publication number: 20080254281
    Abstract: Improved microlayer structures and methods typically employing at least 4 stacked layers of polymers (e.g., including alternating layers of components A and B), such as that obtained by coextrusion. The layers each have a thickness of less than about 50 microns. One optional approach involves forming an intermediate form that includes at least one elongated member made from the plurality of layers, from which a shaped composite article may be made.
    Type: Application
    Filed: October 20, 2005
    Publication date: October 16, 2008
    Inventors: Hongyu Chen, Ronald Wevers, David G. McLeod
  • Publication number: 20080184498
    Abstract: Dyed fabric compositions have now been discovered that often have a balanced combination of desirable properties. The dyed fabric comprises one or more elastic fibers wherein the elastic fibers comprise the reaction product of at least one ethylene olefin block polymer and at least one crosslinking agent. Often the fabrics are characterized by a color change of greater than or equal to about 3.0 according to AATCC evaluation after a first wash by AATCC61-2003-2A.
    Type: Application
    Filed: January 16, 2008
    Publication date: August 7, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Jerry Chien-Ting Wang, Rhonda B. Neel, Yuen-Yuen D. Chiu, Tracy Li Zhi Zhang, Shih-Yaw Lai, Alberto Lora Lamia, Fabio D'ottaviano, Hongyu Chen
  • Publication number: 20080182473
    Abstract: Fiber and fabric compositions of a continuous scouring process and/or capable of being heat set have now been discovered that often have a balanced combination of desirable properties. Said compositions comprise olefin block interpolymers.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 31, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Hongyu Chen, Fabio D'Ottaviano, Alberto Lora Lamia, Jose M. Rego, Jerry T. Chien Ting Wang, Federica Albiero, Guido Bramante
  • Publication number: 20080176473
    Abstract: Knit fabric compositions have now been discovered that often have a balanced combination of desirable properties. Said fibric compositions comprise fibers of olefin block interpolymers or homogeneous branched ethylene polymers or a combination thereof. The fibers are characterized by an amount of crosslinking such that the fabric is capable of being molded.
    Type: Application
    Filed: November 30, 2007
    Publication date: July 24, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Jerry Chien Ting Wang, Fabio D'Ottaviano, Shih-Yaw Lai, Hongyu Chen, Yuen-Yuen D. Chiu, Rio Aditya Akbar, Beverly Selle
  • Publication number: 20080171167
    Abstract: Improved cone dyed yarns have now been discovered which have a balanced combination of desirable properties including less broken fibers and substantially uniform color. These cone dyed yarns comprise one or more elastic fibers and hard fibers, wherein the elastic fibers comprise the reaction product of at least one ethylene olefin block polymer and at least one crosslinking agent.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 17, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Fabio D'Ottaviano, Alberto Lora Lamia, Hong Peng, Hongyu Chen, Yuen-Yuen D. Chiu, Jose M. Rego, Supriyo Das
  • Publication number: 20080138599
    Abstract: Compositions having good wrinkle resistance and other properties when made into garments an be made from an ethylene multi-block copolymers. The resulting fabrics and garments often have good chemical resistance, heat-resistances, and are dimensionally stable.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 12, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Tong Gao, Hongyu Chen, Alberto Lora Lamia, Yuen-Yuen D. Chiu, Jerry Chien Ting Wang, Shih-Yaw Lai
  • Publication number: 20080081854
    Abstract: Knit fabric compositions have now been discovered that often have a balanced combination of desirable properties. Said fabric compositions comprise olefin block interpolymers. These compositions allow for improved processability when manufacturing knitted fabrics.
    Type: Application
    Filed: September 6, 2007
    Publication date: April 3, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Jerry Wang, Hongyu Chen, Yuen-Yuen Chiu, Shih-Yaw Lai, Fabio D'Ottaviano, Supriyo Das, Guido Bramante, Jose Rego
  • Publication number: 20080030252
    Abstract: The invention is directed to a method for clock distribution and VLSI circuits include a clock distribution network. In a method of the invention, a transmission lines are patterned as to connect a clock tree and a periodic waveform clock, preferably a sine waveform, is used to control clock skew, even at frequencies extending into the gigahertz range. In an exemplary embodiment of the invention, an overlay includes differential pairs of transmission lines that connect the drivers of a clock distribution tree. In preferred embodiments of the invention, an H-tree clock distribution scheme is overlayed with a spiral of transmission lines, each realized by a differential conductors and driven using a sinusoidal standing wave to distribute global clock signals into local regions of the chip. Each transmission line connects drivers in the H-tree that are at the same level of the H-tree.
    Type: Application
    Filed: May 23, 2005
    Publication date: February 7, 2008
    Inventors: Chung-Kuan Cheng, Hongyu Chen
  • Publication number: 20070202330
    Abstract: A fiber is obtainable from or comprises a blend of a propylene based polymer and an ethylene/?-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481-1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven, knitted or non-woven fabrics can be made from such fibers.
    Type: Application
    Filed: January 16, 2007
    Publication date: August 30, 2007
    Applicant: Dow Global Technologies Inc.
    Inventors: Hong Peng, Hongyu Chen, Yuen-Yuen Chiu, Shih-Yaw Lai, Eddy Garcia-Meitin, Charles Diehl
  • Publication number: 20070066756
    Abstract: Disclosed herein are polymer blends comprising at least one ethylene/?-olefin interpolymer and two different polyolefins which can be homopolymers. The ethylene/?-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/?-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 22, 2007
    Applicant: Dow Global Technologies Inc.
    Inventors: Benjamin Poon, Hongyu Chen, Yunwa Cheung
  • Publication number: 20070020453
    Abstract: Fibers having improved resistance to moisture at elevated temperatures comprise at least two elastic polymers, one polymer heat-settable and the other polymer heat-resistant, the heat-resistant polymer comprising at least a portion of the exterior surface of the fiber. The fibers typically have a bicomponent and/or a biconstituent core/sheath morphology. Typically, the core comprises an elastic thermoplastic urethane, and the sheath comprises a homogeneously branched polyolefin, preferably a homogeneously branched substantially linear ethylene polymer.
    Type: Application
    Filed: September 25, 2006
    Publication date: January 25, 2007
    Inventors: Ashish Sen, John Klier, Rajen Patel, Hongyu Chen, Thoi Ho
  • Publication number: 20070016882
    Abstract: In one embodiment, a method includes accessing a description of a chip including multiple sequential elements and a clock mesh, information for modeling the sequential elements and interconnections, and a set of parameters of the clock mesh. The method also includes, using the description of the chip, the information for modeling the sequential elements and interconnections, and the set of parameters of the clock mesh, determining multiple window locations covering the clock mesh. Each window location includes one or more of the sequential elements on the chip. The method also includes, for each window location, generating a mesh simulation model including a detailed model inside the window location and an approximate model outside the window location, simulating the mesh simulation model, and measuring clock timing for the sequential elements in the window location based on the mesh simulation model.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 18, 2007
    Inventors: Hongyu Chen, William Walker, Rajeev Murgai
  • Patent number: 7135228
    Abstract: Fibers having improved resistance to moisture at elevated temperatures comprise at least two elastic polymers, one polymer heat-settable and the other polymer heat-resistant, the heat-resistant polymer comprising at least a portion of the exterior surface of the fiber. The fibers typically have a bicomponent and/or a biconstituent core/sheath morphology. Typically, the core comprises an elastic thermoplastic urethane, and the sheath comprises a homogeneously branched polyolefin, preferably a homogeneously branched substantially linear ethylene polymer.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: November 14, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Ashish Sen, John Klier, Rajen M. Patel, Hongyu Chen, Thoi H. Ho