Patents by Inventor Friedrich Kindervater

Friedrich Kindervater 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).

  • Patent number: 4220567
    Abstract: A lacquer comprising an organic binder, at least one pigment or filler, and a zeolite in an amount sufficient to increase the dispersibility of the pigment or filler. Advantageously the pigment is at least one of titanium dioxide, iron oxide and mixed-phase rutile, and the binder is a polyester. Desirably the pigment is present in from about 1 to 5% by volume of the pigment plus any filler and its average particle size is from about 1 to 3 .mu.m.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: September 2, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedrich Kindervater, Gunter Ulisch, Theodor Bohmann, Manfred Mengel, Lothar Puppe
  • Patent number: 4084984
    Abstract: A temperature-stable inorganic yellow pigment of the composition Fe.sub.2 TiO.sub.5 .multidot. x TiO.sub.2, where x is from 0 to about 15, with a particle diameter of less than about 1 micron is produced by forming an aqueous suspension of at least one finely divided iron compound selected from the group consisting of iron oxide, iron oxide hydroxide, iron hydroxide and iron carbonate and at least one finely divided titanium compound selected from the group consisting of titanium dioxide and titanium dioxide oxide hydrate, the iron and titanium compounds being present in accordance with the stoichiometric composition Fe.sub.2 TiO.sub.5 .multidot. x TiO.sub.2 where x is from 0 to about 15, removing the aqueous phase from the mixed suspension, and calcining the residue at a temperature from about 600.degree. C to 1100.degree. C.
    Type: Grant
    Filed: August 14, 1974
    Date of Patent: April 18, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Franz Hund, Wilhelm Holznagel, Henning Erfurth, Friedrich Kindervater, Willi Hennings