Patents by Inventor Pletro Luigi Cavallotti

Pletro Luigi Cavallotti 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).

  • Copper preservative treatment
    Patent number: 6635123
    Abstract: A method of pretreating a copper surface for protecting the surface from oxidation, by immersing the surface in a solution containing organic solderabilty preservatives, such as BenzoTriAzole, with the addition of a zinc salt. The method is particularly useful in the manufacturing of electronic Printed Circuit Boards for protecting the copper surfaces during the solder processes when the PCB undergoes high temperature. The addition of the zinc salts also gives the additional advantage of increasing the solderabilty properties of the copper surface (i.e. wettability and adhesion).
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: October 21, 2003
    Assignee: International Business Machines Corporation
    Inventors: Pletro Luigi Cavallotti, Fiavio Cereda, Vittorio Sirtori, Franco Zambon
  • Copper preservative treatment
    Publication number: 20010030223
    Abstract: A method of pretreating a copper surface for protecting the surface from oxidation, by immersing the surface in a solution containing organic solderabilty preservatives, such as BenzoTriAzole, with the addition of a zinc salt. The method is particularly useful in the manufacturing of electronic Printed Circuit Boards for protecting the copper surfaces during the solder processes when the PCB undergoes high temperature. The addition of the zinc salts also gives the additional advantage of increasing the solderabilty properties of the copper surface (i.e. wettability and adhesion).
    Type: Application
    Filed: April 23, 2001
    Publication date: October 18, 2001
    Inventors: Pletro Luigi Cavallotti, Fiavio Cereda, Vittorio Sirtori, Franco Zambon