Patents Assigned to AB Leo
  • Tobacco compositions, method and device for releasing essentially pure nicotine
    Patent number: 4907606
    Abstract: Novel tobacco compositions which when subjected to an elevated temperature below the combustion temperature the tobacco liberates essentially pure nicotine. The invention also includes a method for liberating nicotine from the compositions and a device for carrying out the method.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: March 13, 1990
    Assignee: AB Leo
    Inventors: Jan E. Lilja, Sven E. L. Nilsson
  • Tobacco compositions, method and device for releasing essentially pure nicotine
    Patent number: 4848376
    Abstract: Novel tobacco compositions which--when subjected to an elevated temperature below the combustion temperature the tobacco--liberates essentially pure nicotine.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: July 18, 1989
    Assignee: AB Leo
    Inventors: Jan E. Lilja, Sven E. Nilsson
  • Tobacco compositions, method and device for releasing essentially pure nicotine
    Patent number: 4776353
    Abstract: Novel tobacco compositions which, when subjected to an elevated temperature below the combustion temperature of the tobacco, liberates essentially pure nicotine. The invention also includes a method for liberating nicotine from the compositions and a device for carrying out the method.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: October 11, 1988
    Assignee: AB Leo
    Inventors: Jan E. Lilja, Sven E. L. Nilsson
  • Steroid esters preparation
    Patent number: 4537722
    Abstract: This invention relates to an improved steroid ester synthesis in which carbodiimides and catalytic amounts of 4-(tertiary amino)-pyridines, in combination with acid catalysts, are used as condensing agents, resulting in pure, non discolored compounds in high yields.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: August 27, 1985
    Assignee: Ab Leo
    Inventors: Anders R. Stamvik, Sten K. Kristensson, Karl-Erik Lundvall
  • Apparatus with built-in heating device for disinfecting contact lenses
    Patent number: 4341948
    Abstract: Apparatus for disinfecting contact lenses by heating, comprising a reservoir designed for holding a liquid and having a tight lid together with a heating device for heating of liquid therein, wherein the reservoir comprises a raised middle part or bridge for dividing said reservoir into two separate chambers or wells, and having a built-in heating device for direct heating of the liquid in said chambers.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: July 27, 1982
    Assignee: AB Leo
    Inventors: Staffan Sundstrom, Tore Herlestam