Patents by Inventor Gottfried Popp

Gottfried Popp 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 the preparation of improved dyestuff granules from suspension containing a propylene oxide-ethylene oxide copolymer
    Patent number: 5213583
    Abstract: To prepare storage-stable, low-dusting dyestuff granules which are readily soluble in plastics, a suspension of the dyestuff containing 0.1-5% by weight of a polyglycol are dried while being granulated.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: May 25, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Vaclav Kaspar, Horst Brandt, Gottfried Popp
  • Pigment formulation
    Patent number: 4013481
    Abstract: Process for the manufacture of pigment preparations by comminution in the presence of surface-active agents which can be saponified under acid or alkaline conditions and which contain at least one group which confers solubility in a radical which is to be split off during the saponification.
    Type: Grant
    Filed: December 4, 1972
    Date of Patent: March 22, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Heinz Molls, Karlheinz Wolf, Reinhold Hornle, Gottfried Popp, Konrad Nonn, Jurgen Spille
  • Process for the preparation of improved dyestuff granules from suspension containing a propylene oxide-ethylene oxide copolymer
    Patent number: RE35768
    Abstract: To prepare storage-stable, low-dusting dyestuff granules which are readily soluble in plastics, a suspension of the dyestuff containing 0.1-5% by weight of a polyglycol are dried while being granulated.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: April 14, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Vaclav Kaspar, Horst Brandt, Gottfried Popp