Patents by Inventor Albert Schwind

Albert Schwind 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).

  • Basic magnesium aluminum hydroxycarbonate
    Patent number: 4539195
    Abstract: Crystalline, basic magnesium aluminum hydroxycarbonate of the formulaAl.sub.2 Mg.sub.6 (OH).sub.12 (CO.sub.3).sub.3.xH.sub.2 Owhere x is at least 4. A process for producing it comprises the conversion of aluminum hydroxide with basic magnesium carbonate and at least one compound selected from magnesium hydroxide and magnesium oxide. Stoichiometric quantities are employed with reference to the aluminum and the magnesium. The conversion takes place at temperatures from 50.degree. to 100.degree. C., and the resulting product is subsequently spray dried.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: September 3, 1985
    Assignee: Giulini Chemie GmbH
    Inventors: Klaus Schanz, Albert Schwind, Hartmut Grund, Peter Klehr
  • Method for the manufacture of pure aluminum oxide from aluminum ore
    Patent number: 4222989
    Abstract: A process for obtaining pure aluminum oxide (Al.sub.2 O.sub.3) from siliceous aluminum ore is disclosed. The aluminum ore is digested in a hydrochloric acid solution to obtain aluminum chloride, the aluminum chloride is crystallized as the hexahydrate, the aluminum chloride hexahydrate is purified and, subsequently, decomposed to give pure aluminum oxide and secondary products. The mother liquor of the crystallization step and the secondary products of the decomposition step are recycled.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: September 16, 1980
    Inventors: Milan Belsky, Albert Schwind, Gunter Winkhaus, Joseph Schierholt