Patents by Inventor David K. Lau

David K. Lau 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).

  • Nonlinear polysiloxane containing coatings with improved adhesion properties
    Patent number: 7604837
    Abstract: A coating composition, particularly a clearcoat composition, which may be a two-component clearcoat composition, comprises a film-forming material, a crosslinking agent, and a nonlinear polysiloxane polymer having a functional group reactive with the crosslinking agent. The coating composition exhibits excellent scratch resistance and adhesion of repair coating layers and sealants, such as windshield sealants.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: October 20, 2009
    Assignee: BASF Coatings AG
    Inventors: Thomas C. Balch, David K. Lau, Peter Betz, Gudrun Wiemann, Donald H. Campbell, Vicki Lynn Berry, Kenneth Christopher Fey, John B. Horstman, Randall Gene Schmidt, Lori Sutton-Poungthana, Gary Michael Wieber, Gerald Lawrence Witucki
  • COATING COMPOSITIONS CONTAINING MONOMERIC, LONG-CHAIN REACTANTS
    Publication number: 20090044724
    Abstract: A coating composition is disclosed comprising a binder, the binder comprising a crosslinker, a thermosetting polymer reactive with the crosslinker, and at least 5 percent by binder weight of a compound that (i) is not a crystalline solid at room temperature, (ii) has at least two groups reactive with the crosslinker, (iii) has two to six ester groups, and (iv) comprises 10 to 48 carbon atoms.
    Type: Application
    Filed: September 13, 2007
    Publication date: February 19, 2009
    Applicant: BASF CORPORATION
    Inventors: WALTER H. OHRBOM, DAVID K. LAU, SERGIO BALATAN, NICHOLAS CAIOZZO, GREGORY G. MENOVCIK
  • Clearcoating composition with unblocked acid catalyst
    Publication number: 20080124472
    Abstract: A two-component solvent-borne clearcoat composition comprising an unblocked acid catalyst, a film-forming binder, and an aminoplast crosslinking agent (e.g., a melamine formaldehyde crosslinking agent) surprisingly provides enhanced appearance when compared to a one-component clearcoating composition containing blocked acid catalyst cured at temperatures above 121° C. (250° F.).
    Type: Application
    Filed: November 29, 2007
    Publication date: May 29, 2008
    Inventors: David K. Lau, Donald H. Campbell, Gregory G. Menovcik