Patents by Inventor Sang C. Shim

Sang C. Shim 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 the production of carboxylic acids and/or esters thereof
    Patent number: 4661619
    Abstract: Carboxylic acids and/or esters thereof are produced by reacting either a benzylic or an aromatic mercaptan with carbon monoxide and either water or an aqueous alcohol at elevated temperature, suitably in the range from 100.degree. to 300.degree. C., in the presence as catalyst of a cobalt carbonyl, the product using water as the reactant being a carboxylic acid and using aqueous alcohol as the reactant a carboxylic acid ester, mixtures of acids and esters being formed using aqueous alcohols having high water concentrations.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: April 28, 1987
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Howard Alper, Sang C. Shim, David J. H. Smith