Patents Assigned to Laboratorios Leti S.A.
  • Use of specific properties of allergens, allergens from animal or botanical sources and methods for their isolation
    Patent number: 5667979
    Abstract: It was found that atopic allergens have enzymatic properties, in particular the properties to hydrolyze amide and/or ester linkages. These properties may be used for various purposes, e.g. for analysis of samples, standardization of pharmaceutical compositions and also for the preparation of the allergens in a pure form.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: September 16, 1997
    Assignee: Laboratorios Leti S.A.
    Inventor: Lubertus Berrens
  • Method for the isolation of primary-toxic compounds or allergens from plant material
    Patent number: 5384395
    Abstract: Primary-toxic chemical compounds with a molecular weight of less than 12000 Daltons, which may be isolated from plant material and which are potential IgE-binding allergens causing immediate-type allergy in predisposed individuals; methods for their isolation and their use for clinical purposes.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: January 24, 1995
    Assignee: Laboratorios Leti S.A.
    Inventor: Lubertus Berrens