Patents by Inventor Manfred Kerl

Manfred Kerl 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).

  • Method for continuously crystalizing polyester material
    Patent number: 5119570
    Abstract: Polyester granulates, in particular slowly crystallizing adhesive copolyesters are crystallized in two fluidized beds (1, 2) arranged in series and are guided into an impact apparatus (3) for the subsequent comminution of the small agglomerates. The first fluidized bed (1) is an effervescent fluidized layer with mixing characteristic and the second fluidized bed (2) is a flow bed with a plug flow characteristic. The second fluidized bed (2) ensures an adequate treatment duration in order to crystallize the amorphous grains of granulate which remain after the first fluidized bed (1).
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: June 9, 1992
    Assignees: Buhler AG, Buhler GmbH
    Inventors: Hans Russemeyer, Manfred Kerl, Hans-Joachim Schmidt, Beat Hani, Werner Kagi
  • Method and apparatus for continuously crystallizing polyester material
    Patent number: 5090134
    Abstract: Polyester granulates, in particular slowly crystallizing adhesive copolyesters are crystallized in two fluidized beds (1, 2) arranged in series and are guided into an impact apparatus (3) for the subsequent comminution of the small agglomerates. The first fluidized bed (1) is an effervescent fluidized layer with mixing characteristic and the second fluidized bed (2) is a flow bed with a plug flow characteristic. The second fluidized bed (2) ensures an adequate treatment duration in order to crystallize the amorphous grains of granulate which remain after the first fluidized bed (1).
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: February 25, 1992
    Assignees: Buhler AG, Buhler GmbH
    Inventors: Hans Russemeyer, Manfred Kerl, Hans-Joachim Schmidt, Beat Hani, Werner Kagi