Patents by Inventor Werner Praxl

Werner Praxl 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).

  • Pesticide containing ignition inhibitor
    Patent number: 4213967
    Abstract: The invention provides a pesticide containing an aluminium or magnesium phosphide and an ignition inhibiting agent essentially consisting of at least one aromatic hydrocarbon which suppresses the tendency of phosphin evolved under the influence of e.g. atmospheric moisture, to self-ignite.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: July 22, 1980
    Assignee: Dr. Werner Freyberg, Chemische Fabrik Delitia Nachf.
    Inventors: Werner Praxl, Reiner Ehret
  • Process for preparing pesticides releasing hydrogen phosphide
    Patent number: 4210683
    Abstract: Process for preparing metal phosphide pesticide compositions which hydrolyze to release hydrogen phosphide in which the pesticide is coated with a water soluble polymer.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: July 1, 1980
    Assignee: Dr. Werner Freyberg Chemische Fabrik
    Inventors: Werner Praxl, Reiner Ehret
  • Method for detoxifying phosphide containing pesticides
    Patent number: 4180557
    Abstract: Method for detoxifying phosphide containing pesticides by treatment with aqueous alkaline reagents optionally containing oxidants and/or surfactants.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: December 25, 1979
    Assignee: Dr. Werner Freyberg
    Inventors: Werner Praxl, Reiner Ehret