Patents by Inventor Klaus Bast

Klaus Bast 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).

  • Solvent dye preparations
    Patent number: 5298034
    Abstract: Pulverulent dye preparations useful for preparing printing inks or finishes comprise one or more solvent dyes and an auxiliary selected from the group consisting of alkyl vinyl ethers, primary, secondary or tertiary alkylamines, polybutylene glycols and addition products of ethylene oxide with polybutylene glycols.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: March 29, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Bast, Ronald Sawa, Wolfgang Keil
  • Pigments which are stable in nitrocellulose
    Patent number: 4142914
    Abstract: A pigment which is stable in nitrocellulose and comprises at least one trisaminotriarylmethane dye and heteropolyacids based on phosphoric acid, molybdic acid or tungstic acid, the pigment containing from 0.1 to 10% by weight (based on the pigment formulation) of a compound which possesses at least one --N(CH.sub.2 --COOH).sub.2 group. The pigment may be used for the stable coloration of nitrocellulose-containing printing inks and finishes or of nitrocellulose chips.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: March 6, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Bast, Erwin Plankenhorn