Patents by Inventor Hendrikus C. J. de Man

Hendrikus C. J. de Man 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).

  • Dendritic macromolecule and the preparation thereof
    Patent number: 5610268
    Abstract: The invention relates to a dendritic macromolecule comprising a core and branches emanating from the core wherein the branches are based on vinyl cyanide and/or fumaryl dinatrile units. The invention also relates to processes for preparing these dendritic macromolecules. The dendritic macromolecules according to the invention are not sensitive to degradation through hydrolysis reactions and are also very stable at a high temperature. The processes are very suitable for large scale production of the dendritic macromolecules without requiring purification of reaction intermediates.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Assignee: DSM N.V.
    Inventors: Egbert W. Meijer, Hubertus J. M. Bosman, Franciscus H. A. M. J. Vandenbooren, Ellen M. M. De Brabander-Van Den Berg, Anna M. C. F. Castelijns, Hendrikus C. J. De Man, Rafael W. E. G. Reintjens, Christiaan J. C. Stoelwinder, Atze J. Nijenhuis
  • Dendritic macromolecule and the preparation thereof
    Patent number: 5530092
    Abstract: The invention relates to a dendritic macromolecule comprising a core and branches emanating from the core wherein the branches are based on vinyl cyanide and/or fumaryl dinatrile units. The invention also relates to processes for preparing these dendritic macromolecules. The dendritic macromolecules according to the invention are not sensitive to degradation through hydrolysis reactions and are also very stable at a high temperature. The processes are very suitable for large scale production of the dendritic macromolecules without requiring purification of reaction intermediates.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: June 25, 1996
    Assignee: DSM N.V.
    Inventors: Egbert W. Meijer, Hubertus J. M. Bosman, Franciscus H. A. M. J. Vandenbooren, Ellen M. M. De Brabander-van den Berg, Anna M. C. F. Castelijns, Hendrikus C. J. De Man, Rafael W. E. G. Reintjens, Christiaan J. C. Stoelwinder, Atze J. Nijenhuis
  • Bromine-containing polymer and process of preparing a bromine-containing polymer
    Patent number: 4412051
    Abstract: Fire-resistant copolymers of bromostyrene and another monomer, preferably acrylonitrile, are made by emulsion polymerization to produce copolymers having 95 to 25 weight percent bromostyrene, the balance being the second monomer. The resulting copolymers have a high bromine content in the range 20 to 44 weight percent and may be used as such as a flame-resistant plastics material or admixed with other plastics such as the polyolefins to impart fire-resistance to the mixture. The copolymers produced exhibit good mechanical properties and fire-resistance values.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: October 25, 1983
    Assignee: Stamicarbon B.V.
    Inventors: Hendrikus C. J. de Man, Petrus T. J. L. Smids