Patents by Inventor Steve Castaldi

Steve Castaldi 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).

  • Method of using ultrasonics to plate silver
    Patent number: 7429400
    Abstract: A method of reducing solder mask interface attack in a process of fabricating printed circuit boards. The method comprises the steps of providing a printed circuit board with a solder mask applied thereon and treating the printed circuit board with an immersion plating solution, wherein the immersion plating solution is plated onto the printed circuit board with the use of ultrasonics in the plating bath. It has been found that the use of ultrasonics at a frequency of about 40 kHz for the entire plating duration provides beneficial results.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: September 30, 2008
    Inventors: Steve Castaldi, John Swanson, Witold Paw
  • Microetching solution
    Patent number: 7393461
    Abstract: The present invention related to an improved microetching solution and a method of using the improved composition for roughening a metal surface and increasing the adhesion strength of a metal layer to a subsequently applied layer. The microetching composition is an aqueous solution comprising cupric ion source, a pyridine derivative, multiethyleneamine, and an acid. In a preferred embodiment, the microetching solution of the invention also comprises a source of halide ions such as sodium chloride or hydrochloric acid.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: July 1, 2008
    Inventors: Kesheng Feng, Nilesh Kapadia, Steve Castaldi
  • Method of using ultrasonics to plate silver
    Publication number: 20070134406
    Abstract: A method of reducing solder mask interface attack in a process of fabricating printed circuit boards. The method comprises the steps of providing a printed circuit board with a solder mask applied thereon and treating the printed circuit board with an immersion plating solution, wherein the immersion plating solution is plated onto the printed circuit board with the use of ultrasonics in the plating bath. It has been found that the use of ultrasonics at a frequency of about 40 kHz for the entire plating duration provides beneficial results.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 14, 2007
    Inventors: Steve Castaldi, John Swanson, Witold Paw
  • Microetching solution
    Publication number: 20070051693
    Abstract: The present invention related to an improved microetching solution and a method of using the improved composition for roughening a metal surface and increasing the adhesion strength of a metal layer to a subsequently applied layer. The microetching composition is an aqueous solution comprising cupric ion source, a pyridine derivative, multiethyleneamine, and an acid. In a preferred embodiment, the microetching solution of the invention also comprises a source of halide ions such as sodium chloride or hydrochloric acid.
    Type: Application
    Filed: August 23, 2005
    Publication date: March 8, 2007
    Inventors: Kesheng Feng, Nilesh Kapadia, Steve Castaldi