Patents Assigned to CECA S.A.
  • Flotation method for oxidized ores
    Patent number: 4168227
    Abstract: In a method for enriching oxidized ores by froth flotation, use is made, as collector, of a combination comprising : at least a first compound selected among amino-l-alkane products having the general formula R.sub.1 - (NH CH.sub.2 CH.sub.2 CH.sub.2)n NH.sub.2, wherein R.sub.1 is a saturated or unsaturated straight- or branched-chain hydrocarbon group containing from 8 to 18 carbon atoms, and n is an integer ranging from 0 to 3, and at least a second compound selected among amino-ether products having one amino function and at least one ether function, of the general formula R.sub.2 - O - (CH.sub.2 CH.sub.2 O)n - CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2, wherein R.sub.2 is a saturated or unsaturated straight- or branched- chain hydrocarbon group containing from 2 to 18 carbon atoms, and n is an integer ranging from 0 to 2.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: September 18, 1979
    Assignee: Ceca S.A.
    Inventors: Jean-Louis Polgaire, Pierre Pivette
  • Method and apparatus for determining permeability of filter media
    Patent number: 4128004
    Abstract: In the measurement of the permeability of a filter medium a cake of the medium is formed in a holder by supplying an excess of the medium, as a suspension under pressure, to the holder, the pressure being relieved and the excess portion being removed to leave an undried cake of medium when the excess portion has dried to a given level as sensed by a pair of electrodes. Two further electrodes are used to determine the time for a given volume of liquid to pass through the cake for measuring its permeability.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: December 5, 1978
    Assignee: Societe Anonyme dite: CECA S.A.
    Inventors: Jacques Caron, Jean-Claude Poncet, Bernard Varney
  • Device for fixing the electrodes of electrostatic dust precipitator filters
    Patent number: 4118836
    Abstract: The present invention relates to a metallic device for fixing discharge electrodes on a frame and cross-pieces so as to constitute elements of electrostatic dust precipitator filters, comprising at least one resilient portion for elastically fixing said device on said frame, and a flat portion, connected to said resilient portion, which holds the electrode in place by elastic pressure between itself and said frame, when the resilient portion has been positioned on the frame.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: October 10, 1978
    Assignee: Ceca S.A.
    Inventors: Jean Duboc, Bernard Poitier
  • Agar-base gelling products
    Patent number: 4052264
    Abstract: Application for bacteriological use, by way of gel supports for culture media, of products consisting of a compound of agar and galactomannane, the proportion of galactomannane representing up to 40%.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: October 4, 1977
    Assignee: Ceca S.A.
    Inventor: Horst Kragen