Patents by Inventor Ruediger Kotkamp

Ruediger Kotkamp 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).

  • Recycling of plastics in a steam cracker
    Patent number: 5731483
    Abstract: A process for recycling plastic waste in a steam cracker, wherein a melt obtained from plastic waste is converted into products at from 400.degree. 550.degree. C., and a distillate fraction is separated off from the products at from 180.degree. to 280.degree. C. and is fed as feed material to a steam cracker.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: March 24, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Stabel, Helmut Woerz, Ruediger Kotkamp, Andreas Fried
  • Recovery of a useful polymerizable fraction
    Patent number: 5326927
    Abstract: In a process for the recovery of a polymerizable useful fraction, consisting of styrene, methylstyrenes, vinyltoluenes, indene, methylindenes and fractions whose boiling points are between styrene and methylindenes, from the crack gases of a steam cracker, the sidestream of the crack gas column is divided, by means of a distillation unit, into the useful fraction and into fractions which are recycled to the crack gas column.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: July 5, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Stabel, Gerd Wunsch, Helmut Woerz, Andreas Fried, Ruediger Kotkamp