Patents by Inventor Joseph Willner

Joseph Willner 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).

  • Carbonation of alkali metal phenates
    Patent number: 4171453
    Abstract: A dry alkali metal phenate can be more efficiently carbonated with carbon dioxide under pressure to an alkali metal carboxylate of a phenol, if the phenate is finely divided and the temperature during carbonation is maintained below about 135.degree. C. until at least about 25 mole percent of the carbon dioxide theoretically necessary to achieve complete carbonation is absorbed by the phenate. This method of carbonation is particularly useful to produce the sodium salt of salicylic acid.
    Type: Grant
    Filed: February 22, 1978
    Date of Patent: October 16, 1979
    Assignee: The Dow Chemical Company
    Inventors: Eugene R. Moore, David C. McDonald, Joseph Willner, Roger L. Briggs