Patents by Inventor William A. Feiler

William A. Feiler 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).

  • Purifying phosphoric acid by extraction with an aliphatic nitrile
    Patent number: 4190634
    Abstract: Impure "wet process" phosphoric acid is purified by solvent extraction in an improved process which uses a solvent composition which comprises an aliphatic nitrile.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: February 26, 1980
    Assignee: Monsanto Company
    Inventor: William A. Feiler
  • Carboxy methoxy malonate
    Patent number: 4014930
    Abstract: A crystalline hydrate of trisodium carboxy methoxy malonate is an effective sequestrant and detergency builder.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: March 29, 1977
    Assignee: Monsanto Company
    Inventors: William A. Feiler, Norman Earl Stahlheber