Patents Represented by Attorney Roy W. Hardin

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  • Ethylbenzene production employing tea-silicate catalysts
    Patent number: 4400570
    Abstract: A process for producing ethylbenzene by catalytic alkylation employing a TEA-silicate catalyst material and steam co-feed are described. Excellent conversion, selectivity and xylene suppression can be obtained under vapor phase alkylation conditions during production of ethylbenzene using TEA-silicate catalysts and steam co-feed.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: August 23, 1983
    Assignee: Cosden Technology, Inc.
    Inventors: James R. Butler, Cleve H. Forward, Thomas W. Robison
  • Food dispenser for a pet
    Patent number: D406924
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: March 16, 1999
    Assignee: Doskocil Manufacturing Company, Inc.
    Inventor: Kevin Kolozsvari
  • Water dispenser for a pet
    Patent number: D406926
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: March 16, 1999
    Assignee: Doskocil Manufacturing Company, Inc.
    Inventor: Kevin Kolozsvari