Patents by Inventor Erik F. S. Christianson

Erik F. S. Christianson 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: 4257909
    Abstract: The invention relates to a cleaning fluid essentially consisting of aliphatic or saturated liquid hydrocarbons and an ethoxylate. The cleaning fluid is a three-phase system consisting of a liquid hydrocarbon which is poor in aromatic content, a wetting agent such as alkyl aryl ethoxylate or alkyl ethoxylate as the second phase, and between the two phases, which are inter-indissoluble, a linking agent consisting of diesterfield monoglycerides of fatty saturated or unsaturated acids. The result is a well-wetting fluid which is poor in aromatic content and does not have an offensive odor but does have a good linking of the hydrocarbon by means of a linking agent which does not cause any inconvenience in the form of skin injuries, eczema or the like.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: March 24, 1981
    Assignee: Danfoss A/S
    Inventor: Erik F. S. Christianson