Patents by Inventor John Mischenko, III

John Mischenko, III 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).

  • Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same
    Patent number: 5685991
    Abstract: The present invention provides for the first time ultrafiltration/diafiltration membranes that are capable of excluding 0.02 .mu.m diameter, monodisperse, latex particles and are capable of being dried without loss of such ultrafiltration properties. A rapid, reliable method for integrity testing membranes also has now been discovered. The test has particular applicability to ultrafiltration membranes, although it may also be used for testing microfiltration membranes as well. In accordance with the method, referred to as the K.sub.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: November 11, 1997
    Assignee: Pall Corporation
    Inventors: Peter J. Degen, John Mischenko, III, Robert E. Kesting, Moira H. Bilich, Trevor A. Staff
  • Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same
    Patent number: 5480554
    Abstract: The present invention provides for the first time ultrafiltration/diafiltration membranes that are capable of excluding 0.02 .mu.m diameter, monodisperse, latex particles and are capable of being dried without loss of such ultrafiltration properties. A rapid, reliable method for integrity testing membranes also has now been discovered. The test has particular applicability to ultrafiltration membranes, although it may also be used for testing microfiltration membranes as well. In accordance with the method, referred to as the K.sub.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: January 2, 1996
    Assignee: Pall Corporation
    Inventors: Peter J. Degen, John Mischenko, III, Robert E. Kesting, Moira H. Bilich, Trevor A. Staff
  • Dispersion system and method
    Patent number: 4534388
    Abstract: A self-cleaning system and method for dispersing aggregates in a fluid medium is provided. The system is comprised of first and second members operatively associated to form an internal chamber and having an inlet to the chamber for admitting the fluid to be treated. At least one of the members is biased toward the other whereby the introduction of a fluid medium to be treated into the chamber under an operating pressure in the range of from about 50 to about 1,000 psid (3.5 to 70.3 kg/cm.sup.2) provides an elongated orifice between the first and second members having a transverse dimension or width of from about 1 to about 1,500 micrometers for egress of the fluid medium. As the fluid passes through the elongated orifice, aggregates contained therein are dispersed. The system is self-cleaning by virtue of the biased nature of at least one of the members toward the other, thereby providing longer onstream operation and requiring less servicing.
    Type: Grant
    Filed: June 7, 1983
    Date of Patent: August 13, 1985
    Assignee: Pall Corporation
    Inventors: David B. Pall, Peter J. Degen, John Mischenko, III