Patents by Inventor Malcolm W. Greaves

Malcolm W. Greaves 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).

  • Collapsible light pipe
    Patent number: 4834495
    Abstract: A prism light guide luminaire of flexible materials which may be collapsed into a flat state for shipping but easily expanded into a tube for use.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: May 30, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Lorne A. Whitehead, Jonathan E. Scott, Malcolm W. Greaves