Patents by Inventor Robert Fuhrmann

Robert Fuhrmann 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).

  • Apparatus and method for testing optical transceivers
    Patent number: 6956643
    Abstract: Systems, apparatus and methods for testing the optical quality of optical transceivers or ports. A port tester is provided that is used to quantitatively measure the optical quality of ports. A port is inserted in the port tester between a mirror assembly and a fiber assembly. A mirror included in the mirror assembly is positioned in or near a focal plane of the port lens. A test light signal is directed through the port from the optical fiber and is reflected back through the port by the mirror. The power of the reflected test signal is compared to a control signal and the comparison between these signals is indicative of the optical quality of the port. The fiber assembly is retractable such that a new port can be mounted in the port tester and tested.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: October 18, 2005
    Assignee: Finisar Corporation
    Inventors: Mina Farr, Robert Fuhrmann
  • Apparatus and method for testing optical transceivers
    Publication number: 20040085528
    Abstract: Systems, apparatus and methods for testing the optical quality of optical transceivers or ports. A port tester is provided that is used to quantitatively measure the optical quality of ports. A port is inserted in the port tester between a mirror assembly and a fiber assembly. A mirror included in the mirror assembly is positioned in or near a focal plane of the port lens. A test light signal is directed through the port from the optical fiber and is reflected back through the port by the mirror. The power of the reflected test signal is compared to a control signal and the comparison between these signals is indicative of the optical quality of the port. The fiber assembly is retractable such that a new port can be mounted in the port tester and tested.
    Type: Application
    Filed: October 2, 2003
    Publication date: May 6, 2004
    Inventors: Mina Farr, Robert Fuhrmann
  • 2-Alkoxy-3-oximinocycloalkenes and production thereof
    Patent number: 3998882
    Abstract: Novel, 2-alkoxy-3-oximinocycloalkenes are prepared by nitrosating cycloalkanones in the presence of a polar nonbasic solvent, an alcohol and at least one equivalent of a strong acid.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: December 21, 1976
    Assignee: Allied Chemical Corporation
    Inventors: Milorad M. Rogic, Robert Fuhrmann
  • 2-Alkoxy-3-oximinocycloalkenes and production thereof
    Patent number: 3991113
    Abstract: Novel, 2-alkoxy-3-oximinocycloalkenes are prepared by nitrosating cycloalkanones in the presence of a polar nonbasic solvent, an alcohol and at least one equivalent of a strong acid.
    Type: Grant
    Filed: October 8, 1974
    Date of Patent: November 9, 1976
    Assignee: Allied Chemical Corporation
    Inventors: Milorad M. Rogic, Robert Fuhrmann
  • Nitrosochlorination of cyclo-olefins
    Patent number: 3931343
    Abstract: Cyclo-olefins are converted in high yield to the corresponding chloro-nitroso dimers by dissolving the cyclo-olefin in liquid SO.sub.2 and contacting with NOCl while maintaining a substantially oxygen-free environment. Even higher yields are attained by controlling the gradual addition of the NOCl and by using a molar ratio of NOCl to cyclo-olefin of less than about 0.92:1.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: January 6, 1976
    Assignee: Allied Chemical Corporation
    Inventors: John Pisanchyn, Stylianos Sifniades, Robert Fuhrmann, Fred W. Koff