Patents by Inventor Gregory C. J. Guecia

Gregory C. J. Guecia 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).

  • Methods and compositions for reclaiming concrete
    Patent number: 5427617
    Abstract: A method of reclaiming leftover ready-mix concrete comprising the steps of:(1) retarding the hydration of the unused portion of concrete returned from a job site; and(2) after the desired retarded period adding a hydration acceleration agent to restore the concrete to a settable state.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: June 27, 1995
    Assignee: Sandoz Ltd.
    Inventors: Gregory S. Bobrowski, Gregory C. J. Guecia, David A. Lupyan, Frederick D. Kinney
  • Methods and compositions for reclaiming concrete
    Patent number: 4964917
    Abstract: A method of reclaiming leftover ready-mix concrete comprising the steps of:(1) retarding the hydration of the unused portion of concrete returned from a job site; and(2) after the desired retarded period adding a hydration acceleration agent to restore the concrete to a settable state.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: October 23, 1990
    Assignee: Sandoz Ltd.
    Inventors: Gregory S. Bobrowski, Gregory C. J. Guecia, David A. Lupyan, Frederick D. Kinney