Patents by Inventor Karl-Heinz Schwieger

Karl-Heinz Schwieger 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: 5304225
    Abstract: Mixtures consisting of a phenolic resin, a hardener, and residues from bisphenol-A production in the ratio of 1:9 to 9:1 are used for the production of binder mixtures for thermostable molding materials. Usable for said purpose are binders with a minimum content of phenolic resin of 10%.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: April 19, 1994
    Assignee: Rutgerswerke AG
    Inventors: Arno Gardziella, Karl-Heinz Schwieger, Peter Adolphs, Josef Suren, Bertold E. Meier
  • Patent number: 4918116
    Abstract: Improved high temperature resistant molding materials containing customary filler materials and additives and a carbon forming bonding agent which is a phenol novolac with a molar ratio of phenol to formaldehyde of 1 to 0.2 to 1 to 0.35 of high quality and free of solvents useful as refractory products, carbon materials, abrasive wheels, friction lining and the like.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: April 17, 1990
    Assignee: Rutgerswerke AG
    Inventors: Arno Gardziella, Karl-Heinz Schwieger, Peter Adolphs, Josef Suren
  • Patent number: 4745024
    Abstract: A non-woven textiles comprising a web of organic fibers bonded together by a binder applied to the fibers as a powdered mixture of a non-heat reactive phenolic resin and at least one thermoreactive condensation resin selected from the group consisting of phenolic resins, epoxy resins and amino resins and then fused and a method of producing said textiles.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: May 17, 1988
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Karl Jellinek, Arno Gardziella, Karl-Heinz Schwieger, Peter Adolphs, Josef Suren
  • Patent number: 4587291
    Abstract: Binders are described based on acid curing phenol resins and acid curing agents which, after mixing, have an extended processability time but nevertheless exhibit a rapid curing time at relatively low temperatures. They are obtained by using, as the resin, aqueous phenol resols and, as the curing agent, either copper, aluminum, or iron(III) salts of aromatic sulfonic acids or addition products of hydroxy-containing, water-compatible polyols with aromatic sulfonic acids or mixtures of these salts and the polyol addition products. The binders are used for impregnation of fabrics, for production of abrasives and for fiber reinforced plastics.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: May 6, 1986
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Arno Gardziella, Karl-Heinz Schwieger, Peter Adolphs, Gerhard Grossmann