Patents by Inventor Jan G. Nel

Jan G. Nel 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).

  • Hydroquinone-containing polyesters having improved whiteness
    Publication number: 20110213077
    Abstract: A polyester containing polymerized units of hydroquinone; 4,4?-biphenol; and hydroxybenzoic acid; terephthalic acid and optionally isophthalic acid. A method of forming a polyester including first acylating a mixture of hydroquinone; 4,4?-biphenol; terephthalic acid and optionally isophthalic acid; and hydroxybenzoic acid; and then polycondensing the resulting acylated mixture. The polyester is suitable for uses such as lighting where high whiteness, high reflectivity and high heat resistance are desirable.
    Type: Application
    Filed: October 30, 2009
    Publication date: September 1, 2011
    Applicant: SOLVAY ADVANCED POLYMERS, L.L.C.
    Inventors: Maria G. Bertucci, Nancy J. Singletary, Jan G. Nel, Christie W. Crowe, Geert J. Verfaillie, Glenn W. Cupta
  • Power LED device with a reflector made of aromatic polyester and/or wholly aromatic polyester
    Publication number: 20110204407
    Abstract: A Power LED device including a reflector and a light emitting diode (LED). The reflector is made of aromatic polyester and/or wholly aromatic polyester.
    Type: Application
    Filed: October 30, 2009
    Publication date: August 25, 2011
    Applicant: SOLVAY ADVANCED POLYMERS, L.L.C.
    Inventors: Glenn W. Cupta, Christie W. Crowe, Nancy J. Singletary, Maria G. Bertucci, Jan G. Nel, Geert J. Verfaillie
  • Aqueous-based polyamide-amic acid compositions
    Patent number: 6479581
    Abstract: An aqueous-based composition comprising an aqueous solution of the product formed of the combination of a polyamide-amic acid and a triamine, preferably wherein the polyamide-amic acid is prepared from trimellitic acid halide or its equivalent and an aromatic diamine comprising 4,4′-methylenedianiline.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: November 12, 2002
    Assignee: Solvay Advanced Polymers, LLC
    Inventors: Daniel J. Ireland, Jan G. Nel, Robert G. Keske
  • Polymerized dienes prepared by step propagation, condensation type polymerization of acyclic dienes
    Patent number: 5290895
    Abstract: Novel polymerized dienes prepared by the step propagation, condensation type polymerization of acyclic dienes employing Lewis acid-free metal alkylidene complexes as catalysts.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: March 1, 1994
    Assignee: University of Florida
    Inventors: Kenneth B. Wagener, James M. Boncella, Robert P. Duttweiler, Marc A. Hillmyer, Jan G. Nel
  • Thermotropic liquid crystalline polyamide
    Patent number: 5286838
    Abstract: Thermotropic liquid crystalline copolyamides comprise: (a) a thermoplastic, aliphatic polyamide, such as nylon-6,6; and (b) a mesogen comprising an amide-linked aromatic group segment which is not completely para-linked (namely, is substantially ortho- or meta-linked or a mixture of ortho- and meta-linked) by an amide linkage to an alkylene amide group contained in the mesogen.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: February 15, 1994
    Assignee: Akzo N.V.
    Inventors: Jan G. Nel, Gert Boven
  • Method for polymerizing acyclic dienes
    Patent number: 5110885
    Abstract: Novel polymerized dienes prepared by the step propagation, condensation type polymerization of acyclic dienes employing Lewis acid-free metal alkylidene complexes as catalysts.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: May 5, 1992
    Assignee: University of Florida
    Inventors: Kenneth B. Wagener, James M. Boncella, Robert P. Duttweiler, Marc A. Hillmyer, Jan G. Nel