Patents by Inventor Arthur Buehler

Arthur Buehler 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).

  • Commercial packages containing dyestuffs
    Patent number: 4046507
    Abstract: New commercial packages of organic dyestuffs, characterised in that they consist of an organic dyestuff or an optical brightener in dry, pulverulent form that is provided with a wrapping, which is soluble in a solvent suitable for the preparation of a dye solution or dye paste, and with the dyestuff or optical brightener so wrapped being optionally provided with a second wrapping that is preferably impervious to water.
    Type: Grant
    Filed: September 12, 1975
    Date of Patent: September 6, 1977
    Assignee: Ciba-Geigy AG
    Inventors: Hans Heini Zweifel, Arthur Buehler, Alfred Fasciati
  • Water-soluble, fiber-reactive phenylazodihydroxy, methyl, cyanopyridine dyestuffs
    Patent number: 4001205
    Abstract: Azo dyestuffs containing at least one acidic group imparting solubility in water and the grouping of the formula ##SPC1##
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: January 4, 1977
    Assignee: Ciba-Geigy AG
    Inventors: Arthur Buehler, Alfred Fasciati, Gerd Hoelzle
  • 4-Methyl-2,6-dihydroxy-3-cyanopyridine containing dyestuffs
    Patent number: 3956263
    Abstract: Water-soluble copper-, chromium-, cobalt- or nickel- complexes of dyestuffs containing at least one sulfo group and a group of the formula ##SPC1##Are disclosed. These dyequffs are useful in dyeing man-made fibers, especially wool, and are fast to light and wet treatments.
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: May 11, 1976
    Assignee: Ciba-Geigy AG
    Inventors: Arthur Buehler, Alfred Fasciati, Gerd Hoelzie
  • Heavy metal complexes of azo dyestuffs containing a 2-amino-3-hydroxypyridine as coupling component
    Patent number: RE29585
    Abstract: The heavy metal complexes of azo dyestuffs of formula ##STR1## where B is hydrogen, chloro or bromo and D is the residue of a diazo component of the benzene or naphthalene series that contains an hydroxyl, carboxyl or amino group in the position ortho to the azo group, are useful to dye substrates, notably wool, in level green and blue shades having good resistance to acid, alkali, light and rubbing.
    Type: Grant
    Filed: March 8, 1977
    Date of Patent: March 21, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerhard Back, Arthur Buehler