Patents by Inventor Leif Hjørnevik

Leif Hjørnevik 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).

  • Free-flowing products comprising potassium formate
    Patent number: 7135439
    Abstract: The present invention relates to a free-flowing potassium formate product, containing 0.1–1 weight % water, and comprises 0.5–5 weight % of a water soluble anticaking agent selected among carbonates, chlorides and hydroxides of alkali metals, and having water affinity corresponding to less than equilibrium water relative humidity (Rh) of 16% at 22° C. The potassium formate is preferably crystalline potassium formate containing 1–2.5 weight % potassium carbonate and/or potassium hydroxide. The product may contain 1–2.5 weight % sucrose and/or manose as anticaking agents.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: November 14, 2006
    Assignee: Yara International ASA
    Inventors: Leif Hjørnevik, Ivar Johansen
  • Aqueous preservative
    Patent number: 6753031
    Abstract: The present invention relates to aqueous preservatives, containing ammonium tetraformate or any other combination of formic acid and ammonia, for grass and other agricultural crops, fish and fish products and meat products, having reduced corrosiveness and irritation to skin, comprising 0.5-5 weight % glycerol. Preferably the content of glycerol in the preservative is 0.75-1.5 weight %. The preservative may further contain at least one metal corrosion inhibitor and/or antioxidant.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: June 22, 2004
    Assignee: Norsk Hydro ASA
    Inventors: Ingvar Selmer-Olsen, Leif Hjørnevik, Freddy Johnsen