Patents by Inventor Lin Wang

Lin Wang 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: 6350903
    Abstract: Novel reactions used to prepare phosphole and bisphosphole compounds are detailed. Novel phosphole compounds and metal coordination compounds of phosphole and bisphosphole compounds are also provided. These metal coordination compounds are useful as catalysts for the polymerization or olefins with carbon monoxide and for the polymerization of acrylic monomers.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: February 26, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Paul J. Fagan, George Yanwu Li, Zhibin Guan, Lin Wang
  • Publication number: 20020009406
    Abstract: Catalysts and processes for the catalytic conversion of hydrocarbons to carbon monoxide and hydrogen employing new families of chromium-rare earth based catalysts are disclosed. One highly active and selective catalyst system, providing greater than 95% CH4 conversion, and 97-98% selectivity to CO and H2 by a net catalytic partial oxidation reaction, is a Ce—Cr—Ni containing compound. A preferred process for the catalytic conversion of a hydrocarbon comprises contacting a feed stream comprising a methane-containing hydrocarbon feedstock and an oxygen-containing gas with a chromium-rare earth containing catalyst in a short contact time reactor maintained at partial oxidation promoting conditions effective to produce synthesis gas.
    Type: Application
    Filed: February 16, 2001
    Publication date: January 24, 2002
    Inventors: Kostantinos Kourtakis, Anne M. Gaffney, Lin Wang
  • Publication number: 20020009407
    Abstract: Reticulated ceramic monolithic catalysts and non-poisoning catalyst supports comprising one or more metal oxides of chromium, cobalt, nickel, an alkaline earth, a rare earth, or another sinterable metal oxide that are active in any of various chemical oxidation reactions are disclosed. Methods of making the new reticulated ceramic structures comprising impregnating an organic foam or other pore-templating material are also disclosed. Processes for the catalytic conversion of light hydrocarbons to products comprising carbon monoxide and hydrogen employing reticulated ceramic catalysts are described.
    Type: Application
    Filed: February 16, 2001
    Publication date: January 24, 2002
    Inventors: Kostantinos Kourtakis, Anne M. Gaffney, Lin Wang
  • Publication number: 20020006374
    Abstract: Processes for the catalytic conversion of hydrocarbons to carbon monoxide and hydrogen employing new chromium-based catalysts are disclosed. One highly active and selective catalyst system, providing greater than 95% CH4 conversion, and 97-98 % selectivity to CO and H2, is a chromium-containing catalyst consisting of a CoCr2O4 cubic spinel precursor dispersed in a chromium oxide matrix. Some other preferred catalysts compositions comprise nickel-chromium containing and rare earth-chromium containing compounds.
    Type: Application
    Filed: February 16, 2001
    Publication date: January 17, 2002
    Inventors: Kostantinos Kourtakis, Anne M. Gaffney, Lin Wang
  • Publication number: 20020007034
    Abstract: Polyolefins made preferably only from ethylene using a selected ethylene oligomerization catalyst to form &agr;-olefins and a polymerization catalyst which can copolymerize ethylene and &agr;-olefins produces a novel polymer which advantageous rheological properties.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 17, 2002
    Inventors: Patricia Metzger Cotts, William Howard Tuminello, Lin Wang, Joel David Citron
  • Patent number: 6297338
    Abstract: Polyolefins made preferably only from ethylene using a selected ethylene oligomerization catalyst to form &agr;-olefins and a polymerization catalyst which can copolymerize ethylene and &agr;-olefins produces a novel polymer which advantageous rheological properties.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: October 2, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patricia Metzger Cotts, William Howard Tuminello, Lin Wang, Joel David Citron
  • Patent number: 6291676
    Abstract: Camptothecin and homocamptothecin analogs and derivatives are provided incorporating alkylamine and polyalkylamine moieties.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: September 18, 2001
    Assignee: University of Kentucky Research Foundation
    Inventors: Thomas G. Burke, Ayhan S. Demir, Cihangir Tanyeli, Ashok J. Chavan, Tie-Lin Wang, Yves Pommier
  • Patent number: 6268430
    Abstract: Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: July 31, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Susan Kuharcik Choi, Christopher Marc Doyle, Mark Gerrit Roelofs, Lin Wang, Zhen-Yu Yang
  • Patent number: 6265507
    Abstract: Selected partially fluorinated olefins containing terminal unfluorinated vinyl groups, and optionally containing other functional groups, may be copolymerized with other olefins such as ethylene and/or propylene using metallocene or Ziegler-Natta type polymerization catalyst systems. The resulting polymers may be used as molding resins, elastomers, for films and in coatings.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: July 24, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Lin Wang, Edward Bryan Coughlin, Zhen-Yu Yang
  • Patent number: 6191231
    Abstract: Fluorine containing terminal olefins may be grafted onto polymers containing hydrogen bound to carbon in the presence of free radicals. The olefins may also contain other functional groups. The resulting novel grafted polymers are useful as molding resins, for coating and as catalysts.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: February 20, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Lin Wang, Zhen Yu Yang
  • Patent number: 6174975
    Abstract: Selected olefins such as ethylene and &agr;-olefins are polymerized by nickel [II] complexes of certain monoanionic ligands. The polyolefins are useful in many applications such as molding resins, film, fibers and others. Also described are many novel nickel compounds and their precursors, as well a novel ligands.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: January 16, 2001
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Lynda Kaye Johnson, Alison Margaret Anne Bennett, Lin Wang, Anju Parthasarathy, Elisabeth Hauptman, Robert D. Simpson, Jerald Feldman, Edward Bryan Coughlin, Steven Dale Ittel
  • Patent number: 6166467
    Abstract: An improved motor housing with a slop structure at one side of the housing, the slot structure is arranged with ledges along its outer edges in which several threaded holes are provided for placing bolts through which clamping level of the outer body can be controlled so that a stator core can be inserted or removed easily and repeatedly, resulting in low cost, simplified assembling process, and facilitating modification and test of a motor in the development stage in research institutions.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: December 26, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Wei-Shin Tsai, Chia-Lin Wang
  • Patent number: 6137012
    Abstract: Novel reactions used to prepare phosphole and bisphosphole compounds are detailed. Novel phosphole compounds and metal coordination compounds of phosphole and bisphosphole compounds are also provided. These metal coordination compounds are useful as catalysts for the polymerization or olefins with carbon monoxide and for the polymerization of acrylic monomers.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: October 24, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Paul J. Fagan, George Yanwu Li, Zhibin Guan, Lin Wang
  • Patent number: 6123883
    Abstract: Stable, concentrated solutions of high molecular weight polyaniline. In order to process high quality fibers and other articles possessing good mechanical properties, it is known that solution concentrations of the chosen polymer should be in the range from 15-30% (w/w). Moreover, it is desirable to use the highest molecular weight consistent with the solubility properties of the polymer. However, such solutions are inherently unstable, forming gels before processing can be achieved. The present invention describes the addition gel inhibitors (GIs) to the polymer solution, thereby permitting high concentrations (>15% (w/w)) of high molecular weight ((M.sub.w)>120,000, and (M.sub.n)>30,000) emeraldine base (EB) polyaniline to be dissolved. Secondary amines have been used for this purpose in concentrations which are small compared to those which might otherwise be used in a cosolvent role therefor.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: September 26, 2000
    Assignee: The Regents of the University of California
    Inventors: Benjamin R. Mattes, Hsing-Lin Wang
  • Patent number: 6107422
    Abstract: Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Sine some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear .alpha.-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected .alpha.-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected .alpha.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: August 22, 2000
    Assignees: E.I. du Pont de Nemours and Company, University of North Carolina at Chapel Hill
    Inventors: Lin Wang, Zhen-Yu Yang
  • Patent number: 6099907
    Abstract: Stable, concentrated solutions of high molecular weight polyaniline. In order to process high quality fibers and other articles possessing good mechanical properties, it is known that solution concentrations of the chosen polymer should be in the range from 15-30% (w/w). Moreover, it is desirable to use the highest molecular weight consistent with the solubility properties of the polymer. However, such solutions are inherently unstable, forming gels before processing can be achieved. The present invention describes the addition gel inhibitors (GIs) to the polymer solution, thereby permitting high concentrations (>15% (w/w)) of high molecular weight ((M.sub.w)>120,000, and (M.sub.n)>30,000) emeraldine base (EB) polyaniline to be dissolved. Secondary amines have been used for this purpose in concentrations which are small compared to those which might otherwise be used in a cosolvent role therefor.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: August 8, 2000
    Assignee: The Regents of the University of California
    Inventors: Benjamin R. Mattes, Hsing-Lin Wang
  • Patent number: 6100324
    Abstract: Disclosed are ionomers comprising functionalized polyolefins having fluoroalkyl sulfonate pendant groups and ionically conductive compositions formed therefrom by the addition of solvents.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: August 8, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Susan Kuharcik Choi, Christopher Marc Doyle, Mark Gerrit Roelofs, Lin Wang, Zhen-Yu Yang
  • Patent number: 6099950
    Abstract: An absorbent material comprising a mixture of (1) a plurality of absorbent gelling particles comprising a water-insoluble, water-swellable polymer, and (2) an absorbent property modification polymer reactive with at least one component included in a urine. The mixture is made by (i) applying a solution containing an organic solvent, water and the absorbent property modification polymer onto the plurality of absorbent gelling particles, wherein the weight ratio of the organic solvent to the water is at least 50:50, and (ii) removing a portion of the organic solvent and water from the applied absorbent gelling particles. When a urine is applied to the absorbent material, the absorbent gelling particles are spontaneously connective through the absorbent property modification polymer. The absorbent material has at least one of the improved absorbent properties after swelling such as (1) liquid permeability, (2) porosity, (3) wet integrity, and (4) recovery property when subjected to external forces.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: August 8, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Lin Wang, Ebrahim Rezai, Yumiko Hayashi
  • Patent number: D454023
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: March 5, 2002
    Inventor: Chin-Lin Wang
  • Patent number: D433299
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: November 7, 2000
    Inventor: Lin Wang-Kuan