Patents by Inventor James Lawrence Manganaro

James Lawrence Manganaro 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).

  • Manufacture of cyanuric acid
    Patent number: 3996224
    Abstract: Waste digester liquor, containing dissolved triazines and iron, is treated with ammonia until the pH is about 2.5 to 4 thereby precipitating most of the triazines while leaving most of the iron in solution. The triazines are separated and recycled back to the digester. The filtrate of ammonium salts is useful as a source of fertilizer nitrogen.
    Type: Grant
    Filed: December 9, 1975
    Date of Patent: December 7, 1976
    Assignee: FMC Corporation
    Inventors: Charles A. Gray, Sidney Berkowitz, James Lawrence Manganaro
  • Manufacture of cyanuric acid
    Patent number: 3996225
    Abstract: Waste digester liquor, containing dissolved triazines, ammonium salts and iron, is treated with a mineral base until the pH is about 2.5 to 4 whereby triazines are precipitated while most of the iron remains dissolved. The triazines are separated and recycled back to the digester. The pH of the filtrate is increased to about 11 and the ammonia stripped off and recovered leaving an essentially nitrogen free aqueous solution. This can be sewered directly or concentrated to recover the salts.
    Type: Grant
    Filed: December 9, 1975
    Date of Patent: December 7, 1976
    Assignee: FMC Corporation
    Inventors: Charles A. Gray, Sidney Berkowitz, James Lawrence Manganaro