Patents by Inventor Gerard Guffroy

Gerard Guffroy 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).

  • Process for enamelling objects electrostatically by means of a gun
    Patent number: 4500560
    Abstract: In this process comprising fluidizing the enamel powder in a fluidization vessel by blowing air in the bottom of the latter, steam is also introduced in the vessel in the course of the fluidization. The relative humidity is adjusted in the vessel to a value between about 15 and 45% in respect of a temperature in the vessel of between about 20.degree. and 30.degree. C. A steam boiler (12) is connected to the fluidization vessel (1) for this purpose.
    Type: Grant
    Filed: August 11, 1982
    Date of Patent: February 19, 1985
    Assignee: De Dietrich & Cie
    Inventor: Gerard Guffroy