Patents by Inventor Robert Jean De Haeck

Robert Jean De Haeck 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 agglomerated flux with a high CaO content for the welding of ordinary or low alloy steels
    Patent number: 4066478
    Abstract: A prefused basic flux composition comprising:______________________________________ SiO.sub.2 about 25 to about 35% Al.sub.2 O.sub.3 about 2 to about 6% TiO.sub.2 about 3 to about 7% CaF.sub.2 about 5 to about 11.25% CaO about 44 to about 52% MgO about 1 to about 10% MnO about 0.5 to about 5% Na.sub.2 O about 4.5 to about 8% K.sub.2 O about 0.5 to about 1.5% FeO 0 to about 2% ______________________________________And wherein the weight ratio of CaO to CaF.sub.2 is equal to or greater than about 4.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: January 3, 1978
    Assignee: La Soudure Electrique Autogene, Procedes Arcos, S.A.
    Inventor: Robert Jean De Haeck
  • Flux for the submerged arc welding of ordinary, semi-alloyed or special steels
    Patent number: 4036671
    Abstract: Flux for welding ordinary, semi-alloyed, alloyed or special steels with a high rate of efficiency and high rate of speed and containing a relatively high amount of Fe powder.
    Type: Grant
    Filed: April 13, 1976
    Date of Patent: July 19, 1977
    Assignee: La Soudure Electrique Autogene, Procedes Arcos, S.A.
    Inventor: Robert Jean De Haeck