Patents by Inventor Oskar T. Tankovitz

Oskar T. Tankovitz 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).

  • Method for making thin walled, closed-ended, tubular articles of thermoplastic elastomer
    Patent number: 6213123
    Abstract: A process for drawing, with plug assist, thin walled, closed-ended, tubular articles of thermoplastic elastomer is disclosed as well as a thermoplastic elastomer and apparatus therefor. According to the process, a plug, extensible into the mold cavity, is employed concurrently with a varying air pressure differential across the faces of the preform to bias the flow of the drawn article axially along the length of the tubular mold and away from the mold walls. At a point where the article is drawn substantially the length of the tubular mold, the mold is evacuated and the article finally formed against the mold walls. Such articles are usefully employed as condoms or finger cots.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: April 10, 2001
    Assignee: Janssen-Ortho, Inc.
    Inventors: Robert G. Miller, William C. Miller, Oskar T. Tankovitz
  • Method for making thin walled closed ended tubular articles of thermoplastic elastomers
    Patent number: 5601092
    Abstract: A process for drawing, with plug assist, thin walled, closed-ended, tubular articles of thermoplastic elastomer is disclosed as well as a thermoplastic elastomer and apparatus therefor. According to the process, a plug, extensible into the mold cavity, is employed concurrently with a varying air pressure differential across the faces of the preform to bias the flow of the drawn article axially along the length of the tubular mold and away from the mold walls. At a point where the article is drawn substantially the length of the tubular mold, the mold is evacuated and the article finally formed against the mold walls. Such articles are usefully employed as condoms or finger cots.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: February 11, 1997
    Assignee: Ortho-McNeil, Inc.
    Inventors: Robert G. Miller, William C. Miller, Oskar T. Tankovitz
  • Method for making thin walled, closed-ended, tubular articles of thermoplastic elastomers
    Patent number: 5598850
    Abstract: A process for drawing, with plug assist, thin walled, closed-ended, tubular articles of thermoplastic elastomer is disclosed as well as a thermoplastic elastomer and apparatus therefor. According to the process, a plug, extensible into the mold cavity, is employed concurrently with a varying air pressure differential across the faces of the preform to bias the flow of the drawn article axially along the length of the tubular mold and away from the mold walls. At a point where the article is drawn substantially the length of the tubular mold, the mold is evacuated and the article finally formed against the mold walls. Such articles are usefully employed as condoms or finger cots.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: February 4, 1997
    Assignee: Ortho-McNeil, Inc.
    Inventors: Robert G. Miller, William C. Miller, Oskar T. Tankovitz
  • Polyesterurethane condom
    Patent number: 5458936
    Abstract: A condom of thermoplastic elastomer is drawn from a polyesterurethane.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 17, 1995
    Assignee: Ortho-McNiel, Inc.
    Inventors: Robert G. Miller, Oskar T. Tankovitz
  • Natural rubber latex film products with improved tear resistance
    Patent number: 5039750
    Abstract: Natural rubber latex compounds are modified by the addition of a high styrene content styrene-butadiene copolymer. The films prepared from these modified NR latex compositions exhibit improved tear strength and a good balance of other properties.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: August 13, 1991
    Assignee: Ortho Pharmaceutical Ltd.
    Inventors: Robert G. Miller, Duncan A. MacKillop, Oskar T. Tankovitz
  • Natural rubber latex film products with improved tear resistance
    Patent number: 4963623
    Abstract: Natural rubber latex compounds are modified by the addition of a high styrene content styrene-butadiene copolymer. The films prepared from these modified NR latex compositions exhibit improved tear strength and a good balance of other properties.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: October 16, 1990
    Assignee: Ortho Pharmaceutical (Canada) Ltd.
    Inventors: Robert G. Miller, Duncan A. MacKillop, Oskar T. Tankovitz