Patents by Inventor Walter Scharen

Walter Scharen 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).

  • Weed control method and composition
    Patent number: 4531965
    Abstract: A method of selectively controlling weeds in crop areas, notably vineyards or fruit plantations, by applying a composition that includes different active herbicidal ingredients; the composition comprises a synergistic combination of about 1 part, by weight, of methyl-5-(2,4-dichlorophenoxy)-2-nitrobenzoate as a first active ingredient, and about 1 to 5 parts, by weight, of 3-tert.butyl-5-chloro-6-methyl-uracil as a second active ingredient.The novel composition comprises said synergistic combination and may further contain a mineral oil and adjuvants such as an emulsifier.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: July 30, 1985
    Assignee: Siegfried Aktiengesellschaft
    Inventors: Jacques Meyer, Walter Scharen
  • Herbicide
    Patent number: 4211551
    Abstract: Herbicidal compositions for selective weed control comprising 4-(4'-chlorobenzyl)-phenoxy acetic acid or a salt thereof and the novel salts of 4-(4'-chlorobenzyl)-phenoxy acetic acid.A method for selectively controlling weeds by applying to a crop area an effective amount of 4-(4'-chlorobenzyl)-phenoxy acetic acid or a salt of said acid.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: July 8, 1980
    Assignee: Siegfried AG
    Inventors: Kurt Thiele, Quazi Ahmed, Walter Scharen, Jacques Meyer