Patents by Inventor Hu Yang

Hu Yang 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: 6454965
    Abstract: Multilayer plastic containers for food and beverage packaging which incorporate oxygen scavenging resins which selectively oxidize upon activation without giving off odorous fragments.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: September 24, 2002
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Ta Yen Ching, Gangfeng Cai, Hu Yang, James P. Leonard, Joseph L. Goodrich, Mark Steven Galland
  • Patent number: 6437086
    Abstract: Herein are disclosed polymeric metal salts useful in catalyzing oxygen scavenging by oxygen scavenging polymers. The polymeric metal salts comprise structure I: wherein R is selected from C1--C20 alkyl, C5-C20 cycloalkyl, C2-C40 branched alkyl, C2-C40 branched alkyl acid or diacid, C2-C12 alkenyl, C5-C12 cycloalkenyl, C2-C40 branched alkenyl, or C2-C40 branched alkenyl acid or diacid; and M is selected from manganese, iron, cobalt, nickel, copper, rhodium, or ruthenium. These polymeric metal salts are substantially non-extractable from a packaging article comprising the metal salts. Also disclosed are packaging articles comprising the polymeric metal salts, and methods of synthesizing the polymeric metal salts.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: August 20, 2002
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Ta Yen Ching, Gangfeng Cai, Hu Yang
  • Publication number: 20020102424
    Abstract: Herein is disclosed multilayer packaging articles comprising an oxygen barrier layer comprising ethylene/vinyl alcohol copolymer (EVOH) (an “EVOH oxygen barrier layer”); an oxygen scavenging layer adjacent thereto, wherein the oxygen scavenging layer comprises a polymer comprising an ethylenic backbone and a cycloalkenyl group having structure I: 1
    Type: Application
    Filed: November 30, 2000
    Publication date: August 1, 2002
    Inventors: Hu Yang, Ta Yen Ching, Gangfeng Cai
  • Publication number: 20020095010
    Abstract: Herein is disclosed an emulsion, comprising an oxygen scavenging polymer, water, and a surfactant. The emulsion can be formed by first forming an emulsion comprising at least one monomer, water, and the surfactant, and polymerizing the monomer. Once formed, the emulsion can be used to form an oxygen scavenging packaging article by coating at least one surface of the packaging article or contacting two surfaces of the packaging article with the emulsion, and evaporating water from the emulsion-coated or -contacted surface, to form a polymer coating.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 18, 2002
    Inventors: Gangfeng Cai, Ta Yen Ching, Richard Schmidt, Hu Yang
  • Publication number: 20020095003
    Abstract: Herein is disclosed a blend of a neat oxygen scavenging polymer and a second polymer. The blend can be prepared by extrusion of a neat formulation of the oxygen scavenging polymer and the second polymer. Also disclosed are methods for preparing the neat formulation of the oxygen scavenging polymer, and packaging articles prepared from the blend. In addition, compositions comprising a branched oxygen scavenging polymer and a second polymer are disclosed, as well as packaging articles prepared from such compositions.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 18, 2002
    Inventors: Gangfeng Cai, Ta Yen Ching, Hu Yang
  • Patent number: 6410807
    Abstract: A process for producing cyclohexene dimethanol or cyclohexane dimethanol compounds is provided. By controlling the rates of addition of certain reaction components and/or by controlling reaction solution temperatures at specific stages during synthesis, this invention provides a process for producing high purity cyclohexene dimethanol or cyclohexane dimethanol compounds without the need for solvent extraction and/or recrystallization procedures.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: June 25, 2002
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Hu Yang, Ta Yen Ching, Gangfeng Cai
  • Publication number: 20020022144
    Abstract: Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group.
    Type: Application
    Filed: May 8, 2001
    Publication date: February 21, 2002
    Inventors: Hu Yang, Ta Yen Ching, Gangfeng Cai
  • Publication number: 20020002238
    Abstract: Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. The composition can be in the form of a physical blend or a cross-linked blend, and can further comprise a compatibilizer, a transesterification catalyst, or both. Preferably, the oxygen barrier polymer is poly(ethylene/vinyl alcohol) (EVOH), polyethylene terephthalate (PET), or polyamide other than MXD6. Preferably, the oxygen scavenging polymer comprises an ethylenic backbone and a pendant cyclic olefinic group, or the oxygen scavenging polymer is a polyamide derived at least in part from a xylene diamine-based monomer.
    Type: Application
    Filed: March 6, 2001
    Publication date: January 3, 2002
    Inventors: Raymond Laplante, Hu Yang, Ta Yen Ching, Gangfeng Cai
  • Patent number: 6265603
    Abstract: Peptidomimetic isoprenyl transferase inhibitors R6SCHR1′CHR1WCHR2YC(:X)NR3CHR5COR4 wherein R1=OH, H, alkyl, amino group or R1 and R6 together form a heterocyclic ring; R1′=H, alkyl, aryl; R2=H, alkyl, arylalkyl, heteroarylalkyl; R3=H, alkyl, arylalkyl; R4=OH, alkoxy, amino group; R5=natural amino acid residue or D—E—F, where D is alkyl or alkenyl, E is O, S, N, or null, F is H, alkyl, aryl, carboxy amino, etc.; R6=H, alkyl, acyl, etc.; W=alkyl, alkenyl; X=O, S, Y is M—O—P, where M is C0-6 alkyl, O is oxygen-C0-4 alkyl, P is(un)substituted C6-20 aryl are disclosed.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: July 24, 2001
    Assignee: Eisai Co., Ltd.
    Inventors: Michael D. Lewis, Ana Maria Garcia, James J. Kowalczyk, Hu Yang, Eric Schwartz
  • Patent number: 5840918
    Abstract: Peptidomimetic compounds useful in the treatment of Ras-associated human cancers, and other conditions mediated by farnesylated or geranylgeranylated proteins; and synthetic intermediates thereof.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: November 24, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Michael D. Lewis, James J. Kowalczyk, Amy E. Christuk, Rulin Fan, Edmund M. Harrington, Xiaoning C. Sheng, Hu Yang, Ana Maria Garcia, Ieharu Hishinuma, Takeshi Nagasu, Kentaro Yoshimatsu