Patents by Inventor Gerard Hammel

Gerard Hammel 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).

  • Flotation process for sludge recovery and energy conversion
    Patent number: 4692249
    Abstract: Sewage is separated in an offshore facility into effluent and sludge. The effluent is used to provide nutrients to a seaweed farm. The sludge is transferred to flexible storage balloons and digested to produce methane which is recovered and dried. The digested sludge is then dried for fuel use.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: September 8, 1987
    Inventor: Gerard Hammel