Patents by Inventor Pia Grimbu/ hler-Can

Pia Grimbu/ hler-Can 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: 5066309
    Abstract: Concentrated, aqueous preparations of 1:2 metal complex dyes which contain 10 to 30% by weight of a 1:2 metal complex dye, 3 to 25% by weight of an anionic dispersant, 1 to 15% by weight of a polyhydroxy compound and 0 to 25% by weight of a customary formulation assistant, in each case based on the total preparation, and water in an amount such that the sum of all the components is 100%, have an excellent stability, are readily pourable and can be diluted with water as desired, and are therefore particularly suitable for the preparation of dyebaths or printing pastes which are employed, in particular, for continuous dyeing or printing of textile fibrous materials of synthetic polyamide.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: November 19, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Ernst Tempel, Pia Grimbu/ hler-Can