Patents by Inventor Leevi Karvonen

Leevi Karvonen 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 and apparatus for the continuous manufacture of fiber-optic cable
    Patent number: 6327767
    Abstract: The present invention relates to a method and apparatus for continuous manufacture of a fiber-optic cable. According to the method, single optical fibers of certain length are formed into a fiber-optic cable enclosed by a secondary sheath. Further, a certain length of the optical fibers is accumulated into an active buffer, and the end of an exhausting fiber is connected by a splice to the end of a new fiber, while the fiber is being fed into the process during the splicing operation from the buffer.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: December 11, 2001
    Assignee: NK Cables Oy
    Inventors: Timo Puhakka, Leevi Karvonen, Markku T. Suvanto