Patents by Inventor Peter Hulthe

Peter Hulthe 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).

  • Method to prevent the formation of incrustations on working electrodes in electrode steam generators or the like and a means for performing the method
    Patent number: 4036716
    Abstract: The present invention relates to electrically heated steam generators and means for preventing and removing incrustations due to hard water in such generators. According to the invention this is achieved by means of a superimposed direct current the polarity of which is periodically changed whereby gas bubbles, mainly carbon dioxide and hydrogen, are generated at the electrodes causing segregation and removing of incrustations on the electrodes, the method and means for feeding of the superimposed direct current being variable.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: July 19, 1977
    Assignee: Goteborgs Analyslaboratorium AB
    Inventor: Peter Hulthe