Patents by Inventor Steven P. Sherwood

Steven P. Sherwood 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).

  • Gas to liquid conversion process
    Publication number: 20030233019
    Abstract: A process is disclosed for the conversion of lower molecular weight hydrocarbons, such as methane, into higher molecular weight hydrocarbon products, such as hydrocarbons having between 4 and 29 carbons. The process includes forming hydrated electrons, such as by mixing the lower molecular weight hydrocarbons with water and contacting the mixture with an energy source to form hydrated electrons. The hydrated electrons react with the methane to form hydrogen and higher molecular weight hydrocarbon products. Also disclosed is a related process for converting higher molecular weight hydrocarbons to lower molecular weight hydrocarbons by forming a mixture of higher molecular weight hydrocarbons and water and contacting the mixture with an energy source to form hydrated electrons that react with the higher molecular weight hydrocarbons to form hydrogen and lower molecular weight hydrocarbon products.
    Type: Application
    Filed: March 17, 2003
    Publication date: December 18, 2003
    Inventor: Steven P. Sherwood
  • Method for production of hydrocarbons
    Patent number: 6500313
    Abstract: A method for converting methane, ethane, and propane into higher molecular weight hydrocarbons and coproduct hydrogen wherein a molecular oxidant-free gas comprising methane, ethane, and/or propane is exposed to ultraviolet light. Through an oxidative coupling mechanism, the feed gases are converted to free radicals which combine to form higher molecular weight hydrocarbons.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: December 31, 2002
    Inventor: Steven P. Sherwood
  • Method for production of hydrocarbons
    Publication number: 20020175067
    Abstract: A method for converting methane, ethane, and propane into higher molecular weight hydrocarbons and coproduct hydrogen wherein a molecular oxidant-free gas comprising methane, ethane, and/or propane is exposed to ultraviolet light. Through an oxidative coupling mechanism, the feed gases are converted to free radicals which combine to form higher molecular weight hydrocarbons.
    Type: Application
    Filed: April 17, 2001
    Publication date: November 28, 2002
    Inventor: Steven P. Sherwood
  • Method for controlling silica deposition in aqueous systems
    Patent number: 5100558
    Abstract: A method for the inhibition of silica deposition on the surfaces of a structure which contains an aqueous medium comprising adding to the aqueous medium a composition comprising HEDP, PEG and a water soluble polymer having the structure: ##STR1## wherein M is a water soluble cation. This invention is particularly effective in cooling water and steam generating systems.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: March 31, 1992
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, Cato R. McDaniel, Truc K. Nguyen, Steven P. Sherwood
  • Method of controlling silica deposition in aqueous systems
    Patent number: 5078891
    Abstract: A method for the inhibition of silica deposition on the internal surfaces of an aqueous system comprising adding to the aqueous system a phosphonate compound and a water soluble polymer having the structure: ##STR1## wherein M is a water soluble cation. The aqueous systems in which the water soluble phosphonate and polymer are particularly effective on cooling water and boiler systems.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: January 7, 1992
    Assignee: Betz Laboratories, Inc.
    Inventors: Steven P. Sherwood, Truc K. Nguyen, Cato R. McDaniel