Patents by Inventor Heinz-Peter Bohlmann

Heinz-Peter Bohlmann 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).

  • Pulverulent polymers crosslinked on the surface
    Patent number: 7507475
    Abstract: The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: March 24, 2009
    Assignee: Evonik Stockhausen GmbH
    Inventors: Waldemar Inger, Rudiger Hose, Heinz-Peter Bohlmann
  • Pulverulent polymers crosslinked on the surface
    Patent number: 7157141
    Abstract: The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: January 2, 2007
    Assignee: Stockhausen GmbH
    Inventors: Waldemar Inger, Rudiger Hose, Heinz-Peter Bohlmann
  • Pulverulent polymers crosslinked on the surface
    Patent number: 6863978
    Abstract: The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 8, 2005
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Waldemar Inger, Rudiger Hose, Heinz-Peter Bohlmann
  • Pulverulent polymers crosslinked on the surface
    Publication number: 20050020780
    Abstract: The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.
    Type: Application
    Filed: August 17, 2004
    Publication date: January 27, 2005
    Inventors: Waldemar Inger, Rudiger Hose, Heinz-Peter Bohlmann
  • Pulverulent polymers crosslinked on the surface
    Publication number: 20040071966
    Abstract: The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 15, 2004
    Inventors: Waldemar Inger, Rudiger Hose, Heinz-Peter Bohlmann