Patents by Inventor Hartmut Rudolph Fischer

Hartmut Rudolph Fischer 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).

  • Patent number: 6372837
    Abstract: The invention relates to a method for preparing a nanocomposite material based on a polymeric matrix and a layered double hydroxide, comprising the steps of: a) providing a layered double hydroxide which contains an amount of anions of at least 20%, based on the total number of anions of the layered double hydroxide, which anions are compatible and/or reactive with the polymeric matrix: b) mixing the layered double hydroxide with a monomeric material for forming the polymeric matrix, in an amount such that the polymeric matrix is present in the nanocomposite material in an amount of at least 50% by weight, based on the nanocomposite material; c) polymerizing the monomeric material to form the polymeric matrix. The invention further relates to a nanocomposite material obtainable by such method and to a shaped article manufactured from such nanocomposite material.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: April 16, 2002
    Assignee: Nederlandse Organisatie voor Toegepast Natuurweten Schappelijk Onderzoek TNO
    Inventors: Hartmut Rudolph Fischer, Leon Hubertus Gielgens
  • Patent number: 6365661
    Abstract: The invention relates to a nanocomposite material based on a polymeric matrix and a layered double hydroxide, wherein the polymeric matrix is present in an amount of at least 50% by weight, based on the nanocomposite material, and wherein the layered double hydroxide contains an amount of anions of at least 20%, based on the total number of anions of the layered double hydroxide, which anions are compatible and/or reactive with the polymeric matrix, and wherein at least 5% of the above amount of anions contain a second charge-carrying group. The invention further relates to a method for preparing such a nanocomposite material and to a shaped article from such a nanocomposite material.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: April 2, 2002
    Assignees: Nederlandse Organisatie voor Toegepast, Natuurwetenschappelijk Onderzoek TNO
    Inventors: Hartmut Rudolph Fischer, Leon Hubertus Gielgens