Patents by Inventor Joern Ehlers

Joern Ehlers 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).

  • Heat storage medium of NaOH-H.sub.2 O-TeO.sub.2
    Patent number: 4372866
    Abstract: A heat storage medium consists of sodium hydroxide and water, the sodium hydroxide concentration being in the range greater than the stoichiometric concentration in sodium hydroxide monohydrate up to and including 80% by weight, the water concentration being in the range less than the said stoichiometric concentration down to and including 20% by weight. Within this particular concentration range the tendency of the sodium hydroxide water system to supercool diminishes after a few cycles. The initial supercooling may be reduced by the addition of tellurium dioxide in amount 0.1 to 2.0% by weight of the combined weight of sodium hydroxide and water.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: February 8, 1983
    Assignee: The British Petroleum Company Limited
    Inventors: Joern Ehlers, Helmut Haukelt