Patents by Inventor Sverre Ludvik Ostern

Sverre Ludvik Ostern 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).

  • Method for the recovery of blasting oil from effluents from the production of nitroglycerine-containing explosives
    Patent number: 4047989
    Abstract: Blasting oil contained in the effluent from the production of explosives containing nitroglycerine is recovered by extracting with nitroaromatics which make part of the final explosive, the resulting extract being used completely in the explosive production. Residues of nitroaromatics may be removed from the purified effluent by means of an extraction liquid being sparely water-soluble, such as toluene or xylene or a mixture thereof.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: September 13, 1977
    Assignee: Dyno Industrier A.S.
    Inventor: Sverre Ludvik Ostern