Patents by Inventor Brian John Needham

Brian John Needham 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).

  • Preparation of azines by a cascade system
    Patent number: 4101581
    Abstract: Azines are prepared by reacting aqueous ammonia and a carbonyl compound with chloramine in a series of two or more reactors arranged in a cascade system.
    Type: Grant
    Filed: February 16, 1971
    Date of Patent: July 18, 1978
    Assignee: Fisons Limited
    Inventors: Brian John Needham, Michael Arthur Smith