Patents Assigned to L. C. Company, Inc.
  • Chromatographic septum having polyimide coating
    Patent number: 4066183
    Abstract: Improved septa for chromatographic apparatus and procedures comprise disc or cylindrical bodies of silicone rubber with a coating of polyimide which may in turn be covered by a coating of Teflon.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: January 3, 1978
    Assignee: L. C. Company, Inc.
    Inventor: Nelson W. Armstrong