Patents by Inventor Bernard J. O. Leman

Bernard J. O. Leman 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 the purification of greasy and soiled water using a heavy solvent, and apparatus for its implementation
    Patent number: 4124502
    Abstract: A process for the purification of waste water containing grease and soil, especially the effluent from wool-soaking and wool-washing, which comprises mixing the waste water with a heavy solvent; separating the emulsion formed to obtain degreased water, a small quantity of water-solvent emulsion, and solvent charged with greasy matter and soil; clarifying this solvent to separate the soil; subjecting the clarified solvent to an azeotropic distillation in the presence of water, to form an emulsion from which the greasy matter can be recovered, and a head product from which the solvent can be regenerated, and apparatus therefor.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: November 7, 1978
    Assignee: Peignage Amedee
    Inventor: Bernard J. O. Leman