Patents by Inventor Lars A. Granlund

Lars A. Granlund 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).

  • Patent number: 4338146
    Abstract: A method of manufacturing an emulsion explosive which is insensitive to a number 8 detonator comprising forming a water solution of at least one oxidizing salt dispersed in a fuel such as oil, wax, urea, aluminum and the like and then heating the solution to a temperature of 70.degree.-100.degree. C. Thereafter gaseous particles are added to the heated solution both as an aid to detonation and as a co-emulsifier. Fuel with emulsifier dissolved therein is then added and emulsification takes place thereafter at relatively low stirring speed due to the presence of the co-emulsifier of gaseous particles and its introduction into the salt solution before any of the other components used for the explosive.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: July 6, 1982
    Assignee: Nitro Nobel AB
    Inventor: Lars A. Granlund
  • Patent number: 4310364
    Abstract: Emulsion explosive sensitive to a detonator, which can be initiated with a conventional detonator no. 8, of water-in-oil-emulsion type containing sensitizers which, as opposed to types known previously, here comprise aromatic nitro-compounds, in which emulsion the organic phase consists primarily of the aromatic nitro-compounds and the water phase consists primarily of a water solution of inorganic oxidizing salts and in which emulsion emulsifier is also included; detonation stabilizers in the form of particles with enclosed or adsorbed gas ("hot spots"); additional fuels such as aluminium, urea, etc.; optional stabilizers for the organic phase and for the water phase; and possibly an agent to lower the crystallization point.
    Type: Grant
    Filed: January 3, 1980
    Date of Patent: January 12, 1982
    Assignee: Nitro Nobel AB
    Inventors: Gunnar O. Ekman, Lars A. Granlund