Patents by Inventor Robert G. Seyl

Robert G. Seyl 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: 4102769
    Abstract: An electrode probe for accurate corrosion current measurement of metals in ionically conducting liquids. Electrode, and insulator to probe holder, are cylindrical surfaces of the same diameter, to combine minimum disturbance of liquid flow past electrode surfaces with substantially uniform density of current passed between the electrodes. Elastic outside shields form water-repellent interfaces that substantially exclude crevice corrosion and define exposed electrode length and area with precision.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: July 25, 1978
    Inventor: Robert G. Seyl
  • Patent number: 4060461
    Abstract: Apparatus and method for correction of error in measuring accelerated and unaccelerated corrosion rates. Means included within a single device that operates through two duplicated electrodes and includes correction for IR losses of ionic conduction between said electrodes, of lead wires from said electrodes to said device, and of circuitry within said device.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: November 29, 1977
    Inventor: Robert G. Seyl
  • Patent number: 3947329
    Abstract: An improvement in the measurement of accelerated corrosion rate when measured on two duplicated electrodes in accordance with U.S. Pat. No. 3,694,324. Difference in free electrode potential between said electrodes is first determined. A means is introduced for varying the ohmic resistance ratio of the isolation resistors through which the cathodic polarizing current is passed to said electrodes. The cathodic current is then applied at a selected rate of increase from zero while said ratio is adjusted to maintain said difference in potential. The cathodic current is then removed and said electrodes are allowed to return to said difference in potential. Measurement is then continuously made of the relationship between corrosion current measured on said electrodes and said cathodic current increased in said manner.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: March 30, 1976
    Inventor: Robert G. Seyl