Patents by Inventor Arnold Day

Arnold Day 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).

  • Tri-carboxylated and tetra-carboxylated fatty acid aspartates as flotation collectors
    Patent number: 4043902
    Abstract: A process for beneficiating non-sulfide minerals such as celestite, barite, scheelite, fluorite, calcite, magnesite, gypsum, anhydrite, cassiterite, apatite and the like comprising froth floating a pulp conditioned with gangue depressant, where necessary, and using salts of tri- and tetra- carboxyl containing fatty alkyl substituted aspartic acids, aspartic mono-esters, and aspartic di-esters.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: August 23, 1977
    Assignee: American Cyanamid Company
    Inventors: Hermen Hartjens, Arnold Day