Patents by Inventor Leonard W. Foster

Leonard W. Foster 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).

  • Vented vacuum semiconductor wafer cassette
    Patent number: 5217053
    Abstract: A vacuum storage cassette for semiconductor wafers has one or more valves to allow the cassette to be evacuated, backfilled, and opened to the surround atmosphere and resealed without the need for a vacuum load-lock chamber.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: June 8, 1993
    Assignee: Texas Instruments Incorporated
    Inventors: Leonard W. Foster, Edwin G. Millis
  • Vented vacuum semiconductor wafer cassette
    Patent number: 5137063
    Abstract: A vacuum storage cassette for semiconductor wafers has one or more valves to allow the cassette to be evacuated, backfilled, and opened to the surround atmosphere and resealed without the need for a vacuum load-lock chamber.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: August 11, 1992
    Assignee: Texas Instruments Incorporated
    Inventors: Leonard W. Foster, Edwin G. Millis
  • Adjustable support system
    Patent number: 4187668
    Abstract: An adjustable support system mounts one member, such as a textile spindle, on a second member, such as a textile machine rail, so as to reduce the transmission of vibrations between the two members. The support system incorporates a flange to which is secured an elastomeric element for resiliently mounting the textile spindle relative to the flange. The flange is kept spaced apart from the machine rail by a member or members that at least contact the flange and at least contact the machine rail. The spacing between the flange and the machine rail can be adjusted through manipulation of adjusting screws or bolts in such a manner as to change the orientation of the flange and the textile spindle mounted on the flange relative to the machine rail. Like the spacing member, the adjusting elements contact both the flange and the machine rail.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: February 12, 1980
    Assignee: Lord Corporation
    Inventors: Edward J. Olowinski, Leonard W. Foster