Patents by Inventor Josef Knauder

Josef Knauder 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).

  • Multi-layer plastic pipe produced by means of rotational casting
    Publication number: 20050129891
    Abstract: The invention relates to a multi-layer plastic pipe which is produced by means of rotational casting.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 16, 2005
    Inventor: Josef Knauder
  • Feeding arm
    Patent number: 6892617
    Abstract: The invention relates to a charging arm for conveying, treating and discharging different starting materials in order to produce glass fiber armored plastic pipes.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: May 17, 2005
    Assignee: HOBAS Engineering GmbH
    Inventor: Josef Knauder
  • Pipe fitting and method for the production thereof
    Patent number: 6554325
    Abstract: The invention relates to a pipe fitting, in particular for connecting waste pipes, especially pipes consisting of glass fiber-reinforced plastic.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: April 29, 2003
    Assignee: Hobas Engineering GmbH
    Inventor: Josef Knauder
  • Flushing block
    Patent number: 4944497
    Abstract: The invention relates to a flushing block for introducing gaseous and/or solid reagents and additives into a metallurgical melting vessel, which is connectable at one end to a gas pipe and at least to a drive means and at its other end has at least one outlet opening extending from its circumferential surface, said opening terminating in at least one gas channel which can be connected to the gas pipe.
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: July 31, 1990
    Assignee: Radex-Heraklith Industriebeteilgungs AG
    Inventors: Bernd Grabner, Lorenz Dotsch, Josef Knauder, Hans Hoffgen