Patents by Inventor W. Thomas Matthews

W. Thomas Matthews 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 regenerating ion exchange resins loaded with naphthenic and other organic acids
    Patent number: 4988737
    Abstract: A process for regenerating anion exchange resins loaded with organic contaminants is described. The anion exchange capacity of loaded resins can be increased by treatment with an aqueous mixture of a strong mineral acid and an organic solvent for naphthenic acid.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: January 29, 1991
    Assignee: The Dow Chemical Company
    Inventors: W. Thomas Matthews, H. Hunter Paalman
  • Method of removing dissolved non-condensibles from geothermal brines
    Patent number: 4026111
    Abstract: Heat energy is more efficiently recovered from geothermal brines by preflashing the brine to remove dissolved, non-condensible gases before flashing the brine to produce motive steam. Power requirements for removal of non-condensibles from turbine exhausts (in order to maintain adequately low exhaust pressures) are obviated. The heat content of the pre-flashed vapors may be largely utilized for superheating and reheating the motive steam.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: May 31, 1977
    Assignee: The Dow Chemical Company
    Inventor: W. Thomas Matthews