Patents by Inventor Roland Ellis, Jr.

Roland Ellis, Jr. 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 wafer cleaning method and apparatus
    Patent number: 5000795
    Abstract: A reagent chemical is directed along a first pipe portion (20) that extends along one side of the array of wafers (14) and which contains a plurality of jets (33) for projecting the chemical toward the wafers. A plurality of second pipe portions (21) transmits an inert gas, with each pipe portion having a plurality of jets (34) for projecting the gas toward the floor of the tank.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: March 19, 1991
    Assignee: AT&T Bell Laboratories
    Inventors: Bryan C. Chung, Roland Ellis, Jr., Kenneth G. Frazee
  • Technique for bonding a chip carrier to a metallized substrate
    Patent number: 4512509
    Abstract: A template (148), having at least one opening (152) therein, is placed in close, spaced, relation to a PCB (30). The opening (152) is circular with a small semicircular notch (154) on the periphery thereof. A chip carrier (10) is positioned in the opening (152) with one corner (22) loosely captured in the notch (154). The PCB (30), template (148) and the loosely captured chip carriers (10) are placed in a condensation soldering facility to reflow the solder. As the solder reflows the chip carrier (10) rotates slightly about the loosely captured corner (22) to self align pads (33) on the PCB (30) to leads (16) on the chip carrier (10) as the bond is being formed.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: April 23, 1985
    Assignee: AT&T Technologies, Inc.
    Inventors: Roland Ellis, Jr., Brian E. Jacobs, Edward J. March, Raymond J. Newman