Patents by Inventor Patrick Michael O'Leary

Patrick Michael O'Leary 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).

  • Ball grid array by partitioned lamination process
    Patent number: 5735452
    Abstract: A method for forming a ball grid array to provide a chip carrier with I/O capabilities is described. The method includes combining three distinct steps into one: partitioning a solder sheet into identical solder pieces using a mask provided with openings that match the footprint of the chip carrier; reflowing the solder pieces into solder balls; and joining the balls to the I/O pads of the chip carrier. By combining these three steps into one, a high throughput, high volume, defect free and contamination free operation for forming I/O connections thus results.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: April 7, 1998
    Assignee: International Business Machines Corporation
    Inventors: Roy Yu, William Harrington Brearley, Kimberley Ann Kelly, Patrick Michael O'Leary, Arthur Gilman Merryman, James Patrick Wood