Patents by Inventor Alison E. Simpson

Alison E. Simpson 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).

  • Effluent treatment
    Patent number: 4752363
    Abstract: A method of treating an organic material such as textile fibres with an alkali metal hydroxide solution including the steps of:(i) contacting the organic material with the hydroxide solution to produce an effluent comprising an alkali metal hydroxide solution which contains multivalent ions and soluble and insoluble organic and inorganic matter;(ii) reducing the pH of the effluent to a value in the range 7 to 9 by contacting it with an acid gas;(iii) filtering the solution from step (ii) to remove suspended insoluble matter having a size greater than 0,1 microns.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: June 21, 1988
    Assignee: The Water Research Commission
    Inventors: Christopher A. Buckley, Alison E. Simpson