Patents by Inventor Christer L. Hakansson

Christer L. Hakansson 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).

  • Process for the purification of mandelic acid N,N-diethylamide
    Patent number: 5149873
    Abstract: A process for the purification of mandelic acid N,N-diethylamide, DEM, by forming a crystalline adduct of DEM with a calcium halide and water.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: September 22, 1992
    Assignee: Rexolin Chemicals AB
    Inventors: Christer L. HaKansson, Bengt L. Karlsson
  • Novel process for the preparation of serinol
    Patent number: 4978793
    Abstract: A process of forming 2-amino-1,3-propanediol by reducing the compound, 5-nitro-1,3-dioxane and subsequently hydrolyzing the reduced compound.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: December 18, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Jennifer M. Quirk, Stephen G. Harsy, Christer L. Hakansson
  • Novel process for the preparation of bronopol
    Patent number: 4851588
    Abstract: A process of forming 2-bromo-2-nitro-1,3-propanediol by contacting a 5-nitro-1,3-dioxane with bromine under alkaline conditions and hydrolyzing the brominated product.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: July 25, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Robert J. Kupper, Felek Jachimowicz, Jennifer M. Quirk, Christer L. Hakansson