Patents by Inventor Floyd Riddle

Floyd Riddle 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).

  • Purification of hydroxylamine
    Patent number: 5788946
    Abstract: The invention provides a method for purification of hydroxylamine so as to have a substantial reduction of cations and anions. The method involves passing a solution of hydroxylamine through at least one strong acid ion exchange bed which has been pretreated with dilute hydrochloric acid and then through at least one strong base anion exchange resin bed.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: August 4, 1998
    Assignee: Ashland Inc.
    Inventors: Floyd Riddle, Frank Michelotti