Patents by Inventor Stanley K. John

Stanley K. John 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).

  • Apparatus for mixing lightweight concrete
    Patent number: 5522658
    Abstract: Apparatus for mixing lightweight concrete includes a main mixing unit which receives volumetrically measured dry aggregate material including polystyrene and wet material which includes cement measured by weight and water measured volumetrically. The wet and dry materials are mixed in the main mixing unit prior to the mixed material being poured into molds for curing.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: June 4, 1996
    Inventor: Stanley K. John