Patents by Inventor Karlheinz Stein

Karlheinz Stein 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).

  • Structure textile material made of at least two base nonwoven fabrics and method for its manufacture
    Patent number: 6398895
    Abstract: The invention relates to a structured textile material made of at least two different, needled base nonwoven fabrics. The base nonwoven fabrics have a structure obtained by needling from at least one side. The needles used for the structure needling are fork needles or crown needles, and the depth of the forks and barbs, respectively, is so selected that, when piercing through, they completely fill up with fibers of the base nonwoven fabric facing the needles. The textile material have unmixed, pure fibers in the pattern, in the background and on the reverse side.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: June 4, 2002
    Assignee: Firma Carl Freudenberg
    Inventors: Karlheinz Stein, Heinrich Laun, Michel Pässler
  • Structure textile material made of at least two base nonwoven fabrics and method for its manufacture
    Publication number: 20020029445
    Abstract: The invention relates to a structured textile material made of at least two different, needled base nonwoven fabrics. The base nonwoven fabrics have a structure obtained by needling from at least one side. The needles used for the structure needling are fork needles or crown needles, and the depth of the forks and barbs, respectively, is so selected that, when piercing through, they completely fill up with fibers of the base nonwoven fabric facing the needles. The textile material have unmixed, pure fibers in the pattern, in the background and on the reverse side.
    Type: Application
    Filed: July 19, 2001
    Publication date: March 14, 2002
    Inventors: Karlheinz Stein, Heinrich Laun, Michel Passler
  • Structured textile material made of at least two base nonwoven fabrics and method for its manufacture
    Patent number: 6287407
    Abstract: The invention relates to a structured textile material made of at least two different, needled base nonwoven fabrics. The base nonwoven fabrics have a structure obtained by needling from at least one side. The needles used for the structure needling are fork needles or crown needles, and the depth of the forks and barbs, respectively, is so selected that, when piercing through, they completely fill up with fibers of the base nonwoven fabric facing the needles. The textile material have unmixed, pure fibers in the pattern, in the background and on the reverse side.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: September 11, 2001
    Assignee: Firma Carl Freudenberg
    Inventors: Karlheinz Stein, Heinrich Laun, Michel Pässler