Patents by Inventor Clarke H. Lewis

Clarke H. Lewis 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 manufacturing a helical reverse osmosis segment
    Patent number: 3983194
    Abstract: This invention relates to a filtration unit for use in reverse osmosis purification, separation, or concentration plants or systems, and in particular to a unique method of winding a length of reinforced cast membrane tubing into a helical form while subjected to high pressure and elevated temperature.
    Type: Grant
    Filed: July 13, 1971
    Date of Patent: September 28, 1976
    Assignee: Oxy Metal Industries Corporation
    Inventors: John L. Richardson, Gilbert Segovia, Clarke H. Lewis