Patents by Inventor Harold G. Spicer

Harold G. Spicer 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).

  • On-site generation, purification, and distribution of ultra-pure anhydrous ammonia
    Patent number: 7371313
    Abstract: A system and method for generating, purifying, and using ultra-pure ammonia on-site, such as at a semiconductor manufacturing facility. The system includes an ammonia generation system configured to generate ammonia including carbon dioxide, water, and other impurities. A purification system is provided with the generation system in the manufacturing facility and is linked to the output of the generation system. The purification system processes the effluent from the ammonia generation system to remove substantially all of the carbon dioxide, water, and other impurities to produce an outlet stream of ultra-pure ammonia. The system further includes a point of use system provided at the same manufacturing facility to utilize the outlet stream of ultra-pure ammonia.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: May 13, 2008
    Assignee: Matheson Tri-Gas, Inc.
    Inventors: Thomas A. Del Prato, Harold G. Spicer