Patents by Inventor Martinus Tels

Martinus Tels 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).

  • Process for selective extraction of metal ions from aqueous solutions and extracting agents suitable for that purpose
    Patent number: 4351807
    Abstract: An extraction process is described for the selective separation of metal ions belonging to the group Cu and Co, in aqueous solution of Cu- and Co-ions, wherein there is used as the extraction medium one or more unsaturated fatty acids, optionally in solution and/or in admixture with saturated fatty acids and an aliphatic oxime.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: September 28, 1982
    Assignee: Stamicarbon, B.V.
    Inventors: Martinus Tels, Jan P. Lotens, Hendrikus P. M. Kivits
  • Process for selective extraction of metal ions from aqueous solutions and extracting agents suitable for that purpose
    Patent number: 4191728
    Abstract: An extraction process is described for the selective separation of bivalent metal ions belonging to the group Cu, Co, Ni and Zn in aqueous solution of Cu- and Ni-ions, Cu- and Zn-ions or Cu- and Co-ions, wherein there is used as the extraction medium one or more unsaturated fatty acids, optionally in solution and/or in admixture with saturated fatty acids and an aliphatic oxime.
    Type: Grant
    Filed: May 9, 1978
    Date of Patent: March 4, 1980
    Assignee: Stamicarbon, B.V.
    Inventors: Martinus Tels, Jan P. Lotens, Hendrikus P. M. Kivits