Patents by Inventor Ralph Smeding

Ralph Smeding 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).

  • Water removal in purification of vinyl chloride
    Patent number: 6391160
    Abstract: Removal of water in a vinyl chloride monomer purification system is achieved through (1) providing a distillation column for separation of a liquid admixture of vinyl chloride, hydrogen chloride, and water into (a) an essentially pure vinyl chloride product stream and (b) a hydrogen chloride distillate stream; and (2) placing a drying system in fluid communication with the distillation column midsection at a connection point where the water is at sufficient concentration to provide a useful mass transfer flux of water from a withdrawn midsection stream into a drying agent.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: May 21, 2002
    Assignee: The Dow Chemical Company
    Inventors: Wayne A. Lockhart, Terrence M. Nimchuk, Joseph J. D. Brochu, Ralph Smeding
  • Water removal in purification of vinyl chloride
    Publication number: 20020032357
    Abstract: Removal of water in a vinyl chloride monomer purification system is achieved through (1) providing a distillation column for separation of a liquid admixture of vinyl chloride, hydrogen chloride, and water into (a) an essentially pure vinyl chloride product stream and (b) a hydrogen chloride distillate stream; and (2) placing a drying system in fluid communication with the distillation column midsection at a connection point where the water is at sufficient concentration to provide a useful mass transfer flux of water from a withdrawn midsection stream into a drying agent.
    Type: Application
    Filed: September 25, 2001
    Publication date: March 14, 2002
    Inventors: Wayne A. Lockhart, Terrence M. Nimchuk, Joseph J.D. Brochu, Ralph Smeding
  • Water removal in purification of vinyl chloride
    Patent number: 6323380
    Abstract: Removal of water in a vinyl chloride monomer purification system is achieved through (1) providing a distillation column for separation of a liquid admixture of vinyl chloride, hydrogen chloride, and water into (a) an essentially pure vinyl chloride product stream and (b) a hydrogen chloride distillate stream; and (2) placing a drying system in fluid communication with the distillation column midsection at a connection point where the water is at sufficient concentration to provide a useful mass transfer flux of water from a withdrawn midsection stream into a drying agent.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: November 27, 2001
    Assignee: The Dow Chemical Company
    Inventors: Wayne A. Lockhart, Terrence M. Nimchuk, Joseph J. D. Brochu, Ralph Smeding