Patents by Inventor Peter Ehlenz

Peter Ehlenz 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).

  • Patent number: 4517308
    Abstract: The aim of the invention was to find a method of producing a sorptive body, to be used especially with objectives such as the elimination of odors and air freshening. In the invented process a granular or powdered solid component consisting of a sorptive material, e.g. active carbon, or a compound containing such a material, is mixed with a binding agent, by which it is generally fixed to a carrier substance. The essence of the invention is that at least part of the finely-ground solid component is mixed with a liquid sorbate; only then it is combined with the dissolved binding agent. In a subsequent operation heat is applied to the mixture, thereby expelling the sorbate. The heat causes pores and capillaries to form within the binding agent, thus enabling air to enter into the sorptive substances deposited in the binding agent and so effecting an increase in the active area of the surface of the body.
    Type: Grant
    Filed: August 31, 1982
    Date of Patent: May 14, 1985
    Assignee: Collo GmbH
    Inventors: Peter Ehlenz, Lutz Irgel
  • Patent number: 4188447
    Abstract: Sustained release compositions containing depots of active substances such as soaps, detergents, antimicrobial agents and the like dispersed in a flexible carrier which are slowly released during use.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: February 12, 1980
    Assignee: Collo GmbH
    Inventor: Peter Ehlenz