Patents by Inventor Helmut Kraft

Helmut Kraft 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).

  • Copper complexes, their preparation, their use in controlling plant pests, and agents for such control
    Patent number: 4528185
    Abstract: Plant-tolerated copper ammine salts of organic acids, their preparation and their use as crop protection agents.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: July 9, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Kraft, Heinz Schumacher, Ernst-Heinrich Pommer, Dietrich Schlotterbeck, Gregor Ley
  • Recombination device for storage batteries
    Patent number: 4497880
    Abstract: A recombination device including a gas-tight enclosure connected to receive he discharge gases from a rechargeable storage battery. Catalytic material for the recombination of hydrogen and oxygen to form water is supported within the enclosure. The enclosure is sealed from the atmosphere by a liquid seal including two vertical chambers interconnected with an inverted U-shaped overflow tube. The first chamber is connected at its upper portion to the enclosure and the second chamber communicates at its upper portion with the atmosphere. If the pressure within the enclosure differs as overpressure or vacuum by more than the liquid level, the liquid is forced into one of the two chambers and the overpressure is vented or the vacuum is relieved. The recombination device also includes means for returning recombined liquid to the battery and for absorbing metal hydrides.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: February 5, 1985
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Helmut Kraft, Konstantin Ledjeff
  • Copper complexes
    Patent number: 4409358
    Abstract: Plant-tolerated copper ammine salts of organic acids, their preparation and their use as crop protection agents.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: October 11, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Kraft, Heinz Schumacher, Ernst-Heinrich Pommer, Dietrich Schlotterbeck, Gregor Ley