Patents by Inventor Horst Michaud

Horst Michaud 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: 5223172
    Abstract: The present invention provides a hardner for epoxide resin masses based on dicyandiamide, wherein it containsa) dicyandiamide with a particle size of .gtoreq.90% .ltoreq.10 .mu.m. andb) 0.1 to 30% by weight of silicon dioxide and/or of an oxide of a metal of Group IIA or IIB of the Periodic Table with a large specific surface area.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: June 29, 1993
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Joachim V. Seyerl, Horst Michaud
  • Patent number: 5166432
    Abstract: The present invention provides a process for the production of cyanamide from urea and/or decomposition products thereof at an elevated temperature with the use of a microporous catalyst, wherein, as catalyst, there is used a zeolite and/or a silicoalumophosphate which is doped with transition metal cations selected from the Group IB and VIIB of the Periodic System. In this way, it is possible to increase the conversion, referred to urea, to 60 to 100%, the selectivity with regard to cyanamide thereby being from about 30 to 50% and with regard to the undesired melamine being .ltoreq.2%.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: November 24, 1992
    Assignee: SKW Trostberg Aktiengesellshaft
    Inventors: Jens Weitkamp, Stefan Ernst, Heinrich Rock, Kurt Scheinost, Benedikt Hammer, Werner Goll, Horst Michaud
  • Patent number: 5047144
    Abstract: The present invention provides a process for the separation of minerals by flotation in the presence of activators and suppressors. Activators are cation-active condensation products and suppressors are anion-active products of aminoplast formers, formaldehyde and amines, ammonium salts, acids or a sulphite, in combination with either an anion-active or cation-active tensides.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: September 10, 1991
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Bohnslav Dobias, Horst Michaud, Josef Seeholzer
  • Patent number: 5034096
    Abstract: The present invention provides a process for bleaching and delignifying cellulose-containing products with peroxides and/or oxygen and/or ozone, wherein there is additionally used 0.01 to 2.5% by weight of cyanamide and/or cyanamide salts, referred to the dry weight of the cellulose.
    Type: Grant
    Filed: December 9, 1986
    Date of Patent: July 23, 1991
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Benedikt Hammer, Horst Michaud, Stefan Weiss
  • Patent number: 5026457
    Abstract: The present invention provides a process for sizing in the production of paper, cardboard, paperboard and other cellulose-containing materials with and without filling materials and/or pigments by natural or synthetic sizing agents under neutral to weakly basic pH conditions without the use of aluminum salts, wherein sizing is carried out with a combination of natural or synthetic sizing agents with a cationic dicyandiamide resin.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: June 25, 1991
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Rudolf Eichinger, Horst Michaud, Josef Seeholzer
  • Patent number: 4626270
    Abstract: The present invention provides an agent for inhibiting the nitrification of nitrogen-containing fertilizers based on dicyandiamide, which comprises 1 to 40% by weight of a fertilizer which is readily soluble in water and/or ammonia.The present invention also provides a process for the production of this agent, wherein finely particulate dicyandiamide is sprayed with an aqueous solution of a fertilizer which is readily soluble in water and/or ammonia and subsequently dried.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: December 2, 1986
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Horst Michaud, Hermann Raveling, Joachim von Seyerl
  • Patent number: 4551166
    Abstract: The invention relates to a nitrogen fertilizer having a long-term action based on urea-formaldehyde condensation products suspended in water. The fertilizer contains dicyandiamide in an amount of from 5 to 35% by weight of dicyandiamide-nitrogen, based on the nitrogen content of the urea, and from 0.001 to 0.5% by weight of polymers of vinyl alcohol or polymers of aldehyde-carboxylic acids, based on the weight of the suspension.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: November 5, 1985
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Horst Behnke, Horst Michaud, Joseph Seeholzer, Svatoplug Solansky
  • Patent number: 4492679
    Abstract: A cyanuric chloride of improved shelf life is described, which contains 0.1 to 10% of dicyandiamide by weight. The cyanuric chloride of the invention shows both a decidedly lesser tendency to cake up and an improved resistance to hydrolysis in the presence of moisture.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: January 8, 1985
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Horst Michaud, Joachim von Seyerl
  • Patent number: 4475939
    Abstract: The present invention provides a stabilized fertilizer solution, especially a nitrogen fertilizer solution, with a content of dicyandiamide as nitrification inhibitor, wherein, for retarding dicyandiamide crystallization, the solution contains at least one water-soluble organic polymeric compound as stabilizer.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: October 9, 1984
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Horst Michaud, Hermann Raveling, Josef Seeholzer
  • Patent number: 4309206
    Abstract: Odorless prilled urea-dicyandiamide fertilizers are produced by melting a mixture of urea and dicyandiamide containing 5% to 35% by weight of dicyandiamide nitrogen, based on the total nitrogen of the mixture, at a temperature below 135.degree. C. and then prilling the molten material to form a free-flowing globular product.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: January 5, 1982
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Horst Michaud, Heinrich Rock, Josef Seeholzer
  • Patent number: 4282385
    Abstract: Novel hyperacid solid metal lactates containing up to about twenty moles of lactic acid per mole a neutral metal lactate are produced by reacting an aqueous solution of lactic acid containing up to about 0.5 percent polylactic acids with a suitable metal compound. Such lactates have the formula Me(C.sub.3 H.sub.5 O.sub.3).sub.x (C.sub.3 H.sub.6 O.sub.3).sub.n wherein n represents a number from 4 to 12 and x corresponds to the valence of the metal Me, and are useful in the food industry as substitutes for liquid lactic acids in the making of bread and beverages.
    Type: Grant
    Filed: April 25, 1979
    Date of Patent: August 4, 1981
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Ulrich Metz, Horst Michaud
  • Patent number: 4234332
    Abstract: Aqueous solutions of commonly used fertilizers which also contain dicyandiamide, in an amount to provide at least 10% by weight of dicyandiamide nitrogen, are effective nitrification inhibitors and have an improved capacity to dissolve micronutrients to form solutions of improved micronutrient stability.
    Type: Grant
    Filed: January 23, 1979
    Date of Patent: November 18, 1980
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Horst Michaud, Georg Rieder, Josef Seeholzer
  • Patent number: 4069383
    Abstract: Melamine is prepared from cyanamide and/or dicyandiamide by contacting the cyanamide and/or dicyandiamide at approximately atmospheric pressure in an organic solvent at 100.degree. to 250.degree. C with at least one solvent selected from the group having the formulas ##STR1## wherein R.sub.1 and R.sub.2 are alkyl which may be joined together to form an alkylene ring,In the simultaneous presence of alkali hydroxide or alkaline earth hydroxide.
    Type: Grant
    Filed: August 17, 1976
    Date of Patent: January 17, 1978
    Assignee: Suddeutsche Kalkstickstoff-Werke Aktiengesellschaft
    Inventors: Horst Michaud, Gunter Ortenburger, Wilhelm Poschinger, Heinrich Rock, Josef Seeholzer
  • Patent number: 4054601
    Abstract: Pure glycolic acid is recovered practically completely from the product obtained by hydrolysis of glycolonitrile containing at least stoichiometrically equivalent amounts of ammonium and sulfate ions by extraction with a mixture of a trialkyl phosphate and a dialkylether, preferably of equal weights of tributyl phosphate and diisopropyl ether, and separation of the glycolic acid from the extraction medium by contact with water.
    Type: Grant
    Filed: June 22, 1976
    Date of Patent: October 18, 1977
    Assignee: Suddeutsche Kalkstickstoff-Werke Aktiengesellschaft
    Inventors: Ulrich Metz, Horst Michaud
  • Patent number: 3933755
    Abstract: A thermosetting resin useful for attaching decorative paper facings to chipboard and like cellulosic panels is prepared by condensation of melamine with thiourea, formaldehyde, and a diol ether, up to one half by weight of the melamine being capable of being replaced by urea without seriously effecting the quality of the resin.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: January 20, 1976
    Assignee: Suddeutsche Kalkstickstoff-Werke AG
    Inventors: Horst Michaud, Josef Seeholzer, Ludwig Pentzel, Josefa Mangs