Patents by Inventor Walter J. Olszewski

Walter J. Olszewski 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).

  • Dual column high pressure nitrogen process
    Patent number: 4439220
    Abstract: A process to efficiently produce large quantities of elevated pressure nitrogen at a high recovery by the cryogenic separation of air employing two separate columns each of which is equipped with a top condenser and wherein the second column processes a feed stream obtained from the first column.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: March 27, 1984
    Assignee: Union Carbide Corporation
    Inventors: Walter J. Olszewski, Ravindra F. Pahade, John H. Ziemer
  • Process to recover argon from oxygen-only air separation plant
    Patent number: 4433990
    Abstract: A process and apparatus to economically produce argon in conjunction with an air separation plant designed originally to produce only oxygen wherein an auxiliary argon column is fed with a small stream from the main oxygen plant and is driven by an independent heat pump circuit.
    Type: Grant
    Filed: December 8, 1981
    Date of Patent: February 28, 1984
    Assignee: Union Carbide Corporation
    Inventor: Walter J. Olszewski
  • Cryogenic system for producing low-purity oxygen
    Patent number: 4254629
    Abstract: Low purity oxygen is produced by factional distillation of liquefied air in a double distillation column and an auxiliary distillation column. Feed air is supplied at two different pressures. The disclosed methods of handling intermediate oxygen-enriched liquid produced by the two columns and removing nitrogen-rich gas from the auxiliary distillation column permit the system to operate with lower energy requirements and smaller column diameter than conventional systems.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: March 10, 1981
    Assignee: Union Carbide Corporation
    Inventor: Walter J. Olszewski
  • Cryogenic system for producing low-purity oxygen
    Patent number: 4224045
    Abstract: Low-purity oxygen is produced by fractional distillation of liquefied air. A gas turbine, powered in part by waste nitrogen from the distillation, supplies energy to compress the feed air. Compressing the waste nitrogen prior to turbine expansion provides an increase in energy efficiency.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: September 23, 1980
    Assignee: Union Carbide Corporation
    Inventors: Walter J. Olszewski, John H. Ziemer