Patents by Inventor Karl Nothen

Karl Nothen 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).

  • Process and a dryer for drying polychloroprene sheets
    Patent number: 4127945
    Abstract: Object of the invention is a process for drying polychloroprene wherein hot air is blown onto both sides of the moist polychloroprene sheet. Optionally the moist sheet is exposed to infrared rays also. A further object of the invention is the dryer consisting of a warm air section and an air cooling section and optionally an infrared section.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: December 5, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Nothen, Francisco B. Creixell, Bodo Ehrig
  • Process for the production of polychloroprene
    Patent number: 4125697
    Abstract: Object of the invention is a process for polymerizing chloroprene in aqueous emulsion in a certain apparatus which prevents formation of deposits and so-called "popcorn" polymers.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: November 14, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Pettelkau, Bodo Ehrig, Karl Nothen, Dietrich Rosahl
  • Process for the production of powder-form hydrolyzed ethylene/vinyl acetate copolymers
    Patent number: 4119687
    Abstract: A process for the production of partially or completely hydrolyzed ethylene/vinyl acetate copolymer which is suitable for the various powder coating techniques, wherein the polymer solution is extruded in a non-gelled state into water with a temperature no more than 20.degree. C below the gellation temperature and the gelling solution is converted into particles from 0.02 to 5 mm in diameter by means of high shear forces.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: October 10, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Raoul Resz, Herbert Bartl, Karl Nothen, Joachim Priemer, Aziz El-Sayed