Patents by Inventor Alun Lewis

Alun 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).

  • Dispersant composition
    Patent number: 4597893
    Abstract: A dispersant composition suitable for dispersing crude oil or petroleum products floating on the surface of water comprises a combination of a selected non-ionic surfactant and an anionic surfactant in a suitable solvent. The non-ionic surfactant is an ester of a polyalkoxylated sorbitol or sorbitan and a fatty acid. The anionic surfactant is selected from the group comprising calcium sulphonate, magnesium sulphonate, sodium sulphonate, triethanolamine sulphonate and isopropylamine sulphonate. Suitable solvents are C.sub.5 to C.sub.10 alcohols, glycols and glycol ethers. The dispersant composition is particularly suitable for use in cold, low salinity water.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: July 1, 1986
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Derek C. Byford, Peter J. Green, Alun Lewis