Patents by Inventor Helmut Buchaeckert

Helmut Buchaeckert 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).

  • Obtaining caprolactam by cleaving oligomers of caprolactam
    Patent number: 4683305
    Abstract: Caprolactam is obtained by cleaving oligomers of caprolactam by a process in which the oligomers, in a liquid or solid state, are introduced into a fluidized alumina bed and cleaved at from 290.degree. to 400.degree. C. in the presence of steam, and, in addition to the amount of inert gas required to fluidize the alumina bed, from 0.1 to 3 times this amount of inert gas is introduced above the fluidized bed.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: July 28, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Hugo Fuchs, Uwe Brand, Helmut Buchaeckert
  • Obtaining caprolactam by cleaving oligomers of caprolactam
    Patent number: RE33073
    Abstract: Caprolactam is obtained by cleaving oligomers of caprolactam by a process in which the oligomers, in a liquid or solid state, are introduced into a fluidized alumina bed and cleaved at from 290.degree. to 400.degree. C. in the presence of steam, and, in addition to the amount of inert gas required to fluidize the alumina bed, from 0.1 to 3 times this amount of inert gas is introduced above the fluidized bed.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: September 26, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Hugo Fuchs, Uwe Brand, Helmut Buchaeckert