Patents by Inventor Alan D. Marston

Alan D. Marston 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).

  • Edge seal with polysilicon in LOCOS process
    Patent number: 4435446
    Abstract: Intrinsic polysilicon is used to seal the sidewalls of the active areas formed in a silicon substrate in an integrated circuit with no additional masking required over a standard local oxidation (LOCOS) process. Since polysilicon and silicon are compatible materials, a "bird's beak" free structure is produced with a minimum number of defects during subsequent processing.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: March 6, 1984
    Assignee: Hewlett-Packard Company
    Inventors: Alan D. Marston, Lenin Anne