Patents by Inventor Robert Schmukler

Robert Schmukler 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).

  • Detection of defects in protective barriers
    Patent number: 6204669
    Abstract: The invention includes apparatus and method for detecting defects in various barrier materials including surgical gloves and food packaging. Voltage is applied across electrodes and a barrier material and the voltage measured and compared with voltage control measurements for the same barrier material without a defect. Sensitivity of measurements is increased by adjusting partial pressure across the barrier material which is subjected to the passage of an ionized gas detected by suitable instrumentation.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: March 20, 2001
    Assignee: Drexel University
    Inventors: Richard B. Beard, Kambiz Pourrezaei, Shengke Zeng, Frederick Prout, Frank M. Kepics, Jin Park, Allen Rothwarf, Siddharth Deliwala, Robert Schmukler
  • Viral-proofing a protective barrier
    Patent number: 5671754
    Abstract: A method of preventing charged particles from passing through holes in a barrier material which involves surface treating a barrier material with an ionic surfactant to impart a charge to the barrier material. In a preferred embodiment, prophylactics such as condoms and surgical gloves can be treated with an anionic surfactant. Tests have confirmed that such surface treated articles can repel virus particles such as human immunodeficiency (HIV) virus, hepatitis B virus and herpes simplex virus (HSV). Ionic surfactant treated articles include prophylactics such as condoms and diaphragms, gloves, including surgical gloves, surgical masks, respiratory masks and filters, filters, including membrane, and wound dressings, including bandages.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: September 30, 1997
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Robert Schmukler, C. David Lytle
  • Fabrication of micron-range holes in protective barriers and encapsulating materials
    Patent number: 5286432
    Abstract: A method of fabricating micron-range holes in elastic barrier materials which involves securing an elastic barrier material to a restraining ring and removing a limited portion of the elastic barrier material so as to form a hole having a diameter of less than 0.5 to 10 .mu.m. The portion of the elastic barrier material which is removed may be removed by a drilling, punching or clipping process.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: February 15, 1994
    Inventors: Robert Schmukler, Richard B. Beard, Frederick C. Prout
  • Method and apparatus for testing a protective barrier material for pinholes and tear strength
    Patent number: 5196799
    Abstract: A method and apparatus for the non-destructive testing of a protective baer material. In a preferred embodiment, the method comprises applying an alternating electrical current across the protective barrier material for establishing a conductivity, G, of the protective barrier material and/or a quality factor, Q, of the protective barrier material. The conductivity, G, and/or the quality factor, Q, are measured at more than one frequency. The quality factor and/or conductivity measurements so obtained at the more than one frequency are compared to predetermined quality factor and/or conductivity limits.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: March 23, 1993
    Assignees: Drexel University, United States of America as represented by the Food & Drug Administration
    Inventors: Richard B. Beard, Robert Schmukler, Herman P. Schwan, Frederick Prout