Patents by Inventor Friedrich Zwickel

Friedrich Zwickel 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).

  • Passive temperature-compensated optical wave guide coupler
    Patent number: 5416867
    Abstract: An optical wave guide coupler with an integral signal modifying element that passively compensates for temperature variations by automatically tilting the element and thereby changing its operating characteristics with changes in temperature. The element is also rotatably, yet firmly, supported by the coupler and is retained at a predetermined angle relative to the axis of the coupler so that the operating characteristics of the element may be selectively varied by rotation of the element holder of the coupler.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: May 16, 1995
    Assignee: AT&T Corp.
    Inventors: Neal H. Thorsten, Friedrich Zwickel
  • Optical packages including fiber seals
    Patent number: 4657346
    Abstract: Disclosed is a method and resulting package which provide an optical fiber seal. One or more fibers are fed through a housing utilizing an apertured insert with a fiber located in each aperture. The housing preferably includes adjacent openings having unequal diameters. A sealing material, such as epoxy is deposited in the larger opening, and/or in the apertures, and the insert is pushed into that opening. The sealing material is thereby forced through the small opening and also into the apertures of the insert to seal the fibers.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: April 14, 1987
    Assignees: American Telephone and Telegraph Company, AT&T Technologies and AT&T Bell Laboratories
    Inventors: Robert W. Berry, Stanley Kaufman, Friedrich Zwickel