Patents by Inventor Knut Ehrhardt

Knut Ehrhardt 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 for the production of cyanuric chloride moldings
    Patent number: 6221294
    Abstract: Cyanuric chloride moldings, especially tablets and flakes, have advantages over powders in ease of handling. The moldings are produced by droplet or strip application of molten cyanuric chloride on to a surface and dissipation of the latent heat of fusion by cooling the surface or contacting the melt applied as droplets or strips with a cooling gas.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: April 24, 2001
    Assignee: Degussa Aktiengesellschaft
    Inventors: Ralf Goedecke, Klaus Hentschel, Rolf-Dieter Möller, Knut Ehrhardt, Manfred Schmidt, Michael Kissner
  • Process for the production of cyanuric chloride moldings
    Patent number: 6136242
    Abstract: The invention relates to a process for the production of cyanuric chloride moldings, particularly in rod or flake form. Cyanuric chloride melt is cooled in a pressure cell equipped with a die capable of strand formation, wherein solidification takes place in the channel or channels of the die. The solidified cyanuric chloride is pressed out of the die in strand form at a temperature of 140.degree. C. or less, preferably 40 to 60.degree. C., and reduced in size as required. The process reduces the sublimation which is otherwise conventional during solidification and cooling.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: October 24, 2000
    Assignee: Degussa-Huls AG
    Inventors: Knut Ehrhardt, Ralf Goedecke, Rolf Moller, Juan Garcia