Patents by Inventor Johan B. Reesink

Johan B. Reesink 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).

  • Liquid-crystalline polyurethanes, compositions of said liquid-crystalline polyurethanes, and a device for optical data storage comprising a liquid-crystalline polyurethane
    Patent number: 5395910
    Abstract: The invention relates to a liquid-crystalline polyurethane having a side chain comprising a mesogenic group, giving a clear polyurethane which does not isomerize under the influence of light. Such liquid-crystalline polyurethanes are highly suited to be used for optical data storage. The invention further relates to infrared-sensitive liquid-crystalline polyurethanes and liquid-crystalline polyurethane compositions, films containing said liquid-crystalline polyurethanes or polyurethane compositions, and a device for optical data storage containing said liquid-crystalline polyurethanes or polyurethane compositions.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: March 7, 1995
    Assignee: Akzo Nobel N.V.
    Inventors: Paulus P. de Wit, Erwin W. P. Erdhuisen, Johan B. Reesink
  • Thermosetting coating composition containing a blocked acid as catalyst
    Patent number: 4482698
    Abstract: A thermosetting coating composition containing an acid-curable amino resin and from 0,1 to 10 percent by weight of a blocked sulphonic acid, calculated on the weight of amino resin. The blocked acid used is an O-sulphonyl hydroxamic ester of the formula [RSO.sub.2 ONHCOO].sub.n A, wherein n represents an integer from 1 to 5 and R and A are organic groups.The new blocked acids are better soluble in the current solvents used in these coating compositions.The compositions may be used advantageously for coating a substrate by electrostatic spraying.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: November 13, 1984
    Assignee: Akzo N.V.
    Inventor: Johan B. Reesink
  • Thermosetting coating composition containing a blocked acid catalyst
    Patent number: 4351935
    Abstract: A thermosetting coating composition contains an acid-curable amino resin and from 0.1 to 10 percent by weight of a blocked sulphonic acid calculated on the weight of amino resin. In order to reduce the electric conductivity of the composition after a prolonged pot-life, a sulphonic acid oximate is used as the blocked acid.The compositions are advantageous for coating a substrate by electrostatic spraying.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: September 28, 1982
    Assignee: Akzo N.V.
    Inventors: Johan B. Reesink, Hendrik J. Hageman, Ulfert E. Wiersum