Patents by Inventor Bohuslav Dobias

Bohuslav Dobias 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 dressing kaolinite by flotation
    Patent number: 4744892
    Abstract: Process for the selective separation of kaolinite and feldspar by flotation in aqueous pulp, wherein flotation is carried out at the pH-value of the pulp which is naturally obtained during suspension of the mixture of minerals in water using water-soluble salts with trivalent metal ions as activators and depressors, in the presence of cationic and/or anionic surfactants as collectors, and optionally in the presence of other standard flotation aids.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: May 17, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Wolfgang von Rybinski, Holger Tesmann, Bohuslav Dobias
  • Process for dressing kaolinite by flotation
    Patent number: 4714544
    Abstract: Process for the selective separation of kaolinite and feldspar by flotation in aqueous pulp, wherein flotation is carried out at the pH-value of the pulp which is naturally obtained during suspension of the mixture of minerals in water using water-soluble salts with trivalent metal ions as activators and depressors, in the presence of cationic and/or anionic surfactants as collectors, and optionally in the presence of other standard flotation aids.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: December 22, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Wolfgang von Rybinski, Holger Tesmann, Bohuslav Dobias
  • Method to directly bond rubber to metal
    Patent number: 4297159
    Abstract: Process for the direct joining of rubber to metal surfaces by vulcanization using a rubber mixture containing the additives common for sulfur vulcanization wherein either the rubber mixture contains additionally tellurium, tellurium alloys and/or tellurium compounds as bonding aid, or that tellurium, tellurium alloy and/or tellurium compound is applied on the metal surface before vulcanizing.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: October 27, 1981
    Assignee: Klaus Heckmann
    Inventors: Bohuslav Dobias, Klaus Heckmann