Patents by Inventor Charles J. Schell

Charles J. Schell 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).

  • Patent number: 5262061
    Abstract: Polyether polyamino methylene phosphonates, when added to various industrial water systems in concentrations between 0.1 mg/L and 50 mg/L, stabilize soluble zinc, manganese and iron ions and their reaction products, in desirable forms and reduced particle sizes. In particular, this stabilization can be achieved under severe conditions which include elevated pH, high dissolved solids content, and high saturation levels of calcium carbonate.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: November 16, 1993
    Assignee: Calgon Corporation
    Inventors: Jasbir S. Gill, Charles J. Schell, Nancy S. Sherwood
  • Patent number: 5128045
    Abstract: A method for stabilizing metal ions in recirculating water systems is disclosed. This method utilizes an admixture comprising a) an ethylenically unsaturated water-soluble polymer and/or a water soluble phosphonate, b) methylene bis(thiocyanate), and c) 2-(thiocyanomethylthio)benzothiazole to solubilize metal ions thereby reducing deposition and corrosion.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: July 7, 1992
    Assignee: Calgon Corporation
    Inventors: Jennifer R. Parsons, Beverly Bendiksen, Charles J. Schell
  • Patent number: 4166608
    Abstract: A novel attachment for a motor vehicle transmission jack of the type having a lift arm adapted to raise and lower motor vehicle transmission parts at its forward end. The attachment is adapted to support a fully assembled 4-wheel drive transmission unit, including the transfer case and the motor vehicle transmission support bracket, independently of a motor vehicle. The attachment includes a base member adapted to be connected to the forward portion of the lift arm and having a support portion adapted to supportably engage the motor vehicle transmission support bracket substantially vertical of the forward end of said lift arm. The attachment also includes a forward support member rigidly secured to the base member, having a support portion adapted to supportably engage the forward portion of the transmission. The support portions of the base member and the forward support member are spaced relative to each other to support the motor vehicle transmission unit in a substantially horizontal position.
    Type: Grant
    Filed: April 4, 1978
    Date of Patent: September 4, 1979
    Inventor: Charles J. Schelle