Patents Assigned to K + S Aktiengesellschaft
  • Coated fertilizer granules
    Patent number: 6309439
    Abstract: The coated fertilizer granules are coated with a carboxyl-carrying ethylene copolymer in which the carboxyl groups may also be in the form of their salts, the carboxyl-carrying ethylene copolymer being composed of a) from 75 to 90% by weight of ethylene and b) from 10 to 25% by weight of an &agr;-olefinically unsaturated C3-C8-alkanecarboxylic acid, and those coated fertilizer granules which contain an active ingredient for crop protection being excepted.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: October 30, 2001
    Assignee: K + S Aktiengesellschaft
    Inventors: Klaus Horchler von Locquenghien, Karl Engelhardt, Eberhard Kleinbach, Michael Wolfgang Müller
  • Granule mixtures composed of coated and non-coated fertilizer granules
    Patent number: 6287359
    Abstract: Granule mixtures composed of a) 5 to 45% by weight of coated fertilizer granules (granules a), composed of a1) a core, comprising a customary fertilizer, and a2) a coat, comprising a coat polymer, and b) 55 to 95% by weight of non-coated fertilizer granules, comprising a customary fertilizer (granules b).
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: September 11, 2001
    Assignee: K+S Aktiengesellschaft
    Inventors: Klaus Erhardt, Klaus Horchler von Locquenghien, Reinhardt Hähndel, Jürgen Dressel, Hans Lang
  • Coated fertilizer granules
    Patent number: 6187074
    Abstract: The coated fertilizer granules are coated with a carboxyl-carrying ethylene copolymer in which the carboxyl groups may also be in the form of their salts, the carboxyl-carrying ethylene copolymer being composed of a) from 75 to 90% by weight of ethylene and b) from 10 to 25% by weight of an &agr;-olefinically unsaturated C3-C8-alkanecarboxylic acid, and those coated fertilizer granules which contain an active ingredient for crop protection being excepted.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: February 13, 2001
    Assignee: K + S Aktiengesellschaft
    Inventors: Klaus Horchler von Locquenghien, Karl Engelhardt, Eberhard Kleinbach, Michael Wolfgang Müller