Patents by Inventor Massimo Del Giudice

Massimo Del Giudice 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).

  • Semiconductor laser having low current threshold
    Patent number: 5504769
    Abstract: A semiconductor laser including a substrate, means for reducing the lateral current flow and means forming the active elements, wherein said means for reducing the lateral current flow are composed by at least three layers of which the external ones are entirely doped and the internal layers are doped only in the zones lateral to the active element so that these layers reduce the side current flow.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: April 2, 1996
    Assignee: Alcatel Italia S.p.A.
    Inventors: Sergio Pellegrino, Massimo Del Giudice, Fabio Vidimari