Patents by Inventor Andre L. Sailer

Andre L. Sailer 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: 4342684
    Abstract: Dyestuff of the formula: ##STR1## in which A represents a mono- or disulphonated naphthalene residue which is unsubstituted or substituted by a hydroxy group and/or by an amino group, B represents an aliphatic, aromatic or heterocyclic residue and D represents the residue of a pyrazolone or an ester or amide of .beta.-ketonic acid; process for the coloration of animal or polyamide fibres in which the coloring agent is a dyestuff of the above formula and articles based on animal or polyamide fibres colored by means of such a dyestuff.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: August 3, 1982
    Assignee: P C U K Produits Chimiques Ugine Kuhlmann
    Inventors: Pierre Frank, Andre L. Sailer
  • Patent number: 4169831
    Abstract: Dyestuffs of the formula: ##STR1## in which C.sub.2 represents the radical of the formula: ##STR2## where X is NH.sub.2 or OH, C.sub.1 and C.sub.3 are different residues of molecules C.sub.1 H and C.sub.3 H free from azo groups and selected from the group consisting of acetylacetic derivatives, pyrazolonic derivatives, benzenic derivatives, and naphthalenic derivatives, only one of the molecules C.sub.1 H and C.sub.3 H being a naphthalenic derivative, one at least of the residues C.sub.1 and C.sub.3 having at least one and at most two sulphonic acid groups, and n having the value 0 or 1 and leather colored with such dyestuffs.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: October 2, 1979
    Assignee: Produits Chimiques Ugine Kuhlmann
    Inventors: Pierre Frank, Andre L. Sailer