Patents by Inventor James S. Keller

James S. Keller 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).

  • Ethylene oxide catalyst loading device
    Patent number: 5626455
    Abstract: A single tube catalyst loading device is provided which consists of a transport belt system, electric motor, and catalyst loading hopper. Using this equipment, it is possible to control the drop rate of catalyst pellets without incurring mechanical damage or breakage of the catalyst. By raising or lowering the hopper section above the transport belt, it is possible to increase or decrease the drop rate of catalyst. Drop rate is the critical parameter in controlling catalyst density within the tubes of an ethylene oxide reactor.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: May 6, 1997
    Assignee: BASF Corporation
    Inventors: James S. Keller, David W. Embry