Patents by Inventor John F. Peters

John F. Peters 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).

  • Modular device for collecting multiple fluid samples from soil using a cone penetrometer
    Patent number: 5358057
    Abstract: An improved module and assembly for sampling liquids and gases within the ground is characterized by module housings containing sampling cavities having lateral openings to the exterior of the housings. Within each lateral opening a removable insert and piston assembly is provided. The piston is displaceable between open and closed positions within the insert in response to changes in pressure from pressure and vacuum sources. When in the closed position, the piston and insert are flush with the exterior of the housing to prevent contaminants from accumulating at the opening. When the module is inserted to a desired depth in the ground, the piston is displaced to the open position and samples from the soil at the desired depth enter the sampling cavity.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: October 25, 1994
    Assignee: U.S. Army Corps of Engineers as represented by the Secretary of the Army
    Inventors: John F. Peters, Daniel A. Leavell, Landris T. Lee, Stafford S. Cooper, Philip G. Malone, Richard W. Peterson
  • Composites utilizing fillers of surface modified hollow microspheres
    Patent number: 4508856
    Abstract: Polymers that are stable under aqueous conditions of high ionic strength are combined with non-fused, silicate based microspheres that are modified with multivalent metals but not washed or dried, said microspheres being present as filters.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: April 2, 1985
    Assignee: PQ Corporation
    Inventors: Christopher G. Smith, John F. Peters