Patents by Inventor Franciscus G. H. Van Duijnhoven

Franciscus G. H. Van Duijnhoven 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).

  • Laser light absorbing additive
    Patent number: 7678451
    Abstract: Laser light absorbing additive comprising particles that contain at least a first polymer with a first functional group and 0-95 wt. % of an absorber, the weight percentage relating to the total of the first polymer and the absorber and the first polymer being bound in at least a part of the surface of the particles by means of the first functional group to a second functional group, which is bound to a second polymer.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: March 16, 2010
    Assignee: Merck Patent GmbH
    Inventors: Franciscus W. M. Gelissen, Franciscus G. H. Van Duijnhoven
  • Laser writable composition
    Patent number: 7674845
    Abstract: Laser writable composition comprising a polymeric laser light absorber dispersed in a matrix polymer, the absorber comprising carbonizing particles that comprise a core and a shell, the core comprising a carbonizing polymer having a first functional group, and the shell, comprising a compatibilizing polymer having a second functional group that can react with the first functional group of the carbonizing polymer, further comprising a reflector.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: March 9, 2010
    Inventors: Franciscus G. H. Van Duijnhoven, Franciscus W. M. Gelissen