Patents by Inventor Bansi L. Kaul

Bansi L. Kaul 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).

  • 1,4-Di-[2'-(2",4"-dichlorophenylazo)-3'-oxobutyramido]-2-methoxybenzene
    Patent number: 4544736
    Abstract: The compound of the formula ##STR1## exists in an .alpha.-modification and a .beta.-modification, the latter being obtained by treatment of the .alpha.-form with a boiling organic solvent, each of which, but especially the .beta.-modification, is useful as a pigment for the mass pigmentation of synthetic plastics and resins, free from or containing a solvent (e.g., viscose, cellulose acetate, polyethylene, polystyrene, polyvinyl chloride, synthetic leathers and synthetic rubbers), surface coatings (e.g., oil- and water-based paints), lacquers and inks and for pigment printing, textile coating and pigmenting paper in the mass.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: October 1, 1985
    Assignee: Sandoz Ltd.
    Inventor: Bansi L. Kaul
  • 1,4-Di-[2'-(2",4"-dichlorophenylazo)acetoacetamido]-2,5-dimethylbenzene
    Patent number: 4540775
    Abstract: The compound of the formula, ##STR1## a pigment existing in a yellow (.alpha.) modification and an orange (.beta.) modification, the latter being obtained by treatment of the .alpha. form with boiling organic solvents, is useful for the mass pigmenting of synthetic plastics and resins, free from or containing solvents, such as viscose, cellulose acetate, polyethylene, polystyrene, polyvinyl chloride and synthetic leathers and rubbers, of surface coatings such as paints and lacquers and of inks and for pigment printing, textile coating and pigmenting paper in the mass.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: September 10, 1985
    Assignee: Sandoz Ltd.
    Inventor: Bansi L. Kaul
  • Mass dyeing of polyester with pyrrocoline dye of his thermal stability
    Patent number: 4494955
    Abstract: Disclosed is mass-dyed polyester comprising, as dyestuff, a compound or mixture of compounds of formula I ##STR1## wherein R.sub.1 is a direct bond, --CONH-- or --NHCO--, R.sub.2 is alkyl, phenyl or naphthyl, optionally substituted or cyano, provided that R.sub.1 is a direct bond when R.sub.2 is cyano, and R.sub.3 is hydrogen, methyl, ethyl, alkoxy-C.sub.1-3 -carbonyl or --CH.dbd.CH--CH.dbd.CH-- bound in the 1,2-position.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: January 22, 1985
    Assignee: Sandoz Ltd.
    Inventors: Peter Bitterli, Bansi L. Kaul
  • Triazinyl compounds as intermediates for producing naphthoquinone derivatives
    Patent number: 4455424
    Abstract: The present invention relates to naphthoquinone derivatives of formula I, ##STR1## in which R.sub.1 signifies a halogen atom, a nitro group or an unsubstituted or substituted alkoxy or amino group,R.sub.2 signifies the atoms necessary to form an unsaturated ring system, which ring system has 1 or 2 nuclei and is unsubstituted or substituted,R.sub.3 signifies an unsubstituted or substituted s-triazinyl or pyrimidyl radical, andn is 0, 1 or 2,which compounds are free from sulphonic acid groups are useful as pigments or disperse dyes.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: June 19, 1984
    Assignee: Sandoz Ltd.
    Inventor: Bansi L. Kaul