Patents by Inventor Ib Attrup

Ib Attrup 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).

  • Use of colloidal PCC
    Patent number: 7267719
    Abstract: The invention relates to a process for regulating the porosity and printing properties of paper, in particular uncoated wood-containing paper such as SC-paper, wherein a sufficient quantity of colloidal PCC having a BET surface area of 10-100 m2/g is used as a filler in the paper to achieve a desired porosity of the paper; as well as paper containing colloidal PCC as filler, and a pigment mixture suitable for paper manufacture and containing colloidal PCC.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: September 11, 2007
    Assignee: J.M. Huber Corporation
    Inventors: Klaus Akilles Lunden, Ib Attrup, Jens Toftelund Madsen
  • Use of colloidal PCC
    Publication number: 20050098066
    Abstract: The invention relates to a process for regulating the porosity and printing properties of paper, in particular uncoated wood-containing paper such as SC-paper, wherein a sufficient quantity of colloidal PCC having a BET surface area of 10-100 m2/g is used as a filler in the paper to achieve a desired porosity of the paper; as well as paper containing colloidal PCC as filler, and a pigment mixture suitable for paper manufacture and containing colloidal PCC.
    Type: Application
    Filed: December 10, 2004
    Publication date: May 12, 2005
    Inventors: Klaus Lunden, Ib Attrup, Jens Madsen
  • Process for regulating the porosity and printing properties of paper by use of colloidal precipitated calcium carbonate, and paper containing such colloidal precipitated calcium carbonate
    Patent number: 6887351
    Abstract: The invention relates to a process for regulating the porosity and printing properties of paper, in particular uncoated wood-containing paper such as SC-paper, wherein a sufficient quantity of colloidal PCC having a BET surface area of 10-100 m2/g is used as a filter in the paper to achieve a desired porosity of the paper; as well as paper containing colloidal PCC as filler, and a pigment mixture suitable for paper manufacture and containing colloidal PCC.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: May 3, 2005
    Assignee: J. M. Huber Denmark ApS
    Inventors: Klaus Akilles Lunden, Ib Attrup, Jens Toftelund Madsen