Patents Assigned to G. Aliprandini
  • Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic metals or metalloids
    Patent number: 10619260
    Abstract: A galvanic bath, containing: gold metal in the form of alkaline aurocyanide; organometallic components; a wetting agent; a complexing agent; free cyanide; copper metal in the form of copper II cyanide and potassium; and indium metal in the form of a complex indium metal, where the galvanic bath does not contain cadmium and zinc, and where the galvanic bath deposits a yellow gold alloy comprising gold, copper, and indium as main components.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: April 14, 2020
    Assignees: The Swatch Group Research and Development Ltd., G. Aliprandini
    Inventors: Giuseppe Aliprandini, Michel Caillaud
  • Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic metals or metalloids
    Patent number: 9683303
    Abstract: The invention relates to a make-up solution for a galvanic bath comprising organometallic components, a wetting agent, a complexing agent and free cyanide, wherein the make-up solution further comprises copper in the form of copper II cyanide and potassium, and complex indium allowing, after addition of alkaline aurocyanide, to galvanically depositing a gold alloy.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: June 20, 2017
    Assignees: The Swatch Group Research and Development Ltd, G. Aliprandini
    Inventors: Giuseppe Aliprandini, Michel Caillaud
  • METHOD OF OBTAINING A YELLOW GOLD ALLOY DEPOSITION BY GALVANOPLASTY WITHOUT USING TOXIC METALS OR METALLOIDS
    Publication number: 20100206739
    Abstract: The invention relates to an electrolytic deposition in the form of a gold alloy with a thickness of between 1 and 800 microns and which includes copper. According to the invention, the deposition includes indium as the third main compound. The invention concerns the field of electroplating methods.
    Type: Application
    Filed: September 11, 2008
    Publication date: August 19, 2010
    Applicants: The Swatch Group Research and Development Ltd., G. Aliprandini
    Inventors: Giuseppe Aliprandini, Michel Caillaud