Patents by Inventor Adrian Humphries

Adrian Humphries 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).

  • Process for the exchange of crystalline zeolites
    Patent number: 4459271
    Abstract: This invention relates to exchanging the sodium contained in a crystalline zeolite by partially removing sodium by exchange with another cation, partially drying the exchanged zeolite and re-exchanging the dried zeolite.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: July 10, 1984
    Assignee: Harshaw/Filtrol Partnership
    Inventors: John Lim, Michael Brady, Adrian Humphries