Patents by Inventor Johan M. Houben

Johan M. Houben 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).

  • Plasma spraying apparatus
    Patent number: 4199104
    Abstract: Plasma spraying apparatus is provided with means for selective release of carrier gas for the coating powder prior to the injection of the powder into the plasma stream. The gas release is effected by one or two apertured tube wall portions associated with a closure sleeve slidable on the tube or by a swirl chamber with a lateral gas outlet provided with a filter and a regulating valve.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: April 22, 1980
    Assignee: Plasmainvent AG
    Inventor: Johan M. Houben