Patents by Inventor Hans-Harald Hunger

Hans-Harald Hunger 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).

  • Production of a titania-pigmented polyamide
    Patent number: 7820757
    Abstract: Disclosed is a method for producing a polyamide containing titanium dioxide pigments.
    Type: Grant
    Filed: October 18, 2003
    Date of Patent: October 26, 2010
    Assignee: BASF SE
    Inventors: Christoph Plachetta, Manfred Heckmann, Hans-Harald Hünger, Robert Weiβ
  • Method for the production of a polyamide pigmented with titanium dioxide
    Publication number: 20060047057
    Abstract: Disclosed is a method for producing a polyamide containing titanium dioxide pigments.
    Type: Application
    Filed: October 18, 2003
    Publication date: March 2, 2006
    Inventors: Christoph Plachetta, Manfred Heckmann, Hans-Harald Hunger, Robert Weib
  • Preparation of polyamides
    Patent number: 6429279
    Abstract: The disclosure is a process for preparing polyamides by concentrating the wash water extract from the extraction of polyamide to an extractables content of not more than 85% by weight, adding fresh lactam down to a water content of from 0.5 to 13% by weight, and effecting at least one adiabatic expansion during the polymerization.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: August 6, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Harald Hünger, Alfons Ludwig, Rainer Neuberg, Gunter Pipper, Thomas Sauer, Axel Wilms
  • Recovery of caprolactam monomer and oligomer from aqueous polycaprolactam extracts
    Patent number: 5962681
    Abstract: The disclosure is a process for recovering caprolactam monomer and oligomer from aqueous polycaprolactam extracts by removing the inorganic contaminants present therein.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: October 5, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Egly, Hans-Harald Hunger, Thomas Sauer