Patents by Inventor Pietro Luigi Cavalloti

Pietro Luigi Cavalloti 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).

  • Electronic device with high wettability solder pads
    Patent number: 6048629
    Abstract: An electronic device has a layer of high wettability tin-bismuth solder alloy on component leads and substrate pads. The solder is electrodeposited onto copper with an electrodeposition bath containing a zinc salt, although no zinc is co-deposited on the copper. The tin-bismuth layer has a low quantity of oxygen thereby increasing the wettability and decreasing the oxidation at the surface after reflowing.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: April 11, 2000
    Assignee: International Business Machines Corporation
    Inventors: Pietro Luigi Cavalloti, Vittorio Sirtori, Giovanni Zangari