Patents by Inventor Vinzenz Habermacher

Vinzenz Habermacher 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).

  • Process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong's acid)
    Patent number: 4348334
    Abstract: A process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid by sulfonating naphthalene, nitrating the sulfonation product, and separating the pure magnesium salt of 3-nitronaphthalene-1,5-disulfonic acid, which process comprises:(a) sulfonating naphthalene with liquid SO.sub.3 in the presence of an inert organic solvent at temperatures between -40.degree. and +20.degree. C.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: September 7, 1982
    Assignees: Ciba-Geigy AG, Bayer Aktiengesellschaft
    Inventors: Bernhard Albrecht, Hans Frey, Vinzenz Habermacher, Horst Behre, Lutz Kienitz, Wolfgang Schenk, Guido Steffan, Axel Vogel
  • Continuous reduction process
    Patent number: 4217304
    Abstract: A process for the reduction of aromatic nitro compounds to amino compounds in the liquid phase using iron as reducing agent, which comprises carrying out the reduction continuously such that the reducing iron, based on the amount of nitro compound present in the reactor, is present in an amount substantially in excess of the stoichiometric amount, and effecting the continuous removal of the reaction products such that the substantial excess of reducing iron is also constantly present in the reactor during the reduction.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: August 12, 1980
    Assignee: Ciba-Geigy AG
    Inventors: Bernhard Albrecht, Hans Frey, Vinzenz Habermacher, Paul Havalda, Georg Halfter