Patents by Inventor Gabriel Sader

Gabriel Sader 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).

  • Patent number: 4376040
    Abstract: In the recovery of regenerated mineral and synthetic oils from blackish dirty lubricating or industrial oils, a quaternary ammonium salt or mixture of salts is added to the dirty oil and the mixture is subjected to agitation. The agitated mixture is next subjected to a decanting operation making it possible to recover, as the upper supernatant fraction, an oil exhibiting approximately the same characteristics as a new starting oil useful for automotive engines, transmissions and differentials, as a lubricant for machine tools, useful in transformers and other electric and electropneumatic devices and also useful as a hydraulic fluid.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: March 8, 1983
    Inventor: Gabriel Sader
  • Patent number: 4184949
    Abstract: Water, polluted with hydrocarbons and similar pollutants in which separation occurs into an upper layer, rich in hydrocarbons and residues, and a lower layer consisting of a hydrocarbon suspension or emulsion in water, is treated to remove the pollutants from the water. The upper layer is treated with quaternary ammonium salts to separate the heavy residue from a clear (or light-colored) supernatant layer, analogous to fuel oil and reusable; the lower layer is then treated with a mixture of a polyose (starch, for example) and a coagulant (for example, ordinary alum) to obtain a practically pure water. This treatment may be applied to water containing oil products and, in particular, water collected from degreasing and dewaxing plants.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: January 22, 1980
    Inventor: Gabriel Sader