Patents by Inventor Leonard Andrew Johnson

Leonard Andrew Johnson 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).

  • Annealing mold and retainer for making a fiber optic current sensor
    Patent number: 5935292
    Abstract: An annealing mold and fiber retaining device includes a fiber holding plate having fiber channels and an annealing insert. Retainers are provided for attachment to the plate to retain fibers in the channels. After annealing, the annealing insert is replaced by a packaging insert. The fiber holding plate is mounted between a support plate and a cover plate. The mounted plates include a coextensive current conductor port and the plates are mounted in a housing which includes vibration mounts for isolating the plates from vibration within the housing.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: August 10, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Edward Hernandez, Trevor Wayne MacDougall, John Anthony Valenti, Jay Walter Dawson, Leonard Andrew Johnson