Patents by Inventor Stefano GHIRINGHELLI

Stefano GHIRINGHELLI 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).

  • Discoloration-resistant gold alloy
    Patent number: 10683570
    Abstract: Alloy for the manufacturing of jewels or clock components with minimum concentrations of gold of 75 wt %, of copper between 5% and 21%, of silver between 0% and 21%, of iron between 0.5% and 4% and vanadium between 0.1% and 2.0%, intended to increase the tarnishing-resistance of alloys with a minimum content of gold of 75 wt % under environments in which Sulphur- and chlorine-compounds are present.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: June 16, 2020
    Assignee: ARGOR-HERAEUS SA
    Inventors: Sergio Arnaboldi, Marco Nauer, Stefano Ghiringhelli
  • DISCOLORATION-RESISTANT GOLD ALLOY
    Publication number: 20180312953
    Abstract: Alloy for the manufacturing of jewels or clock components with minimum concentrations of gold of 75 wt %, of copper between 5% and 21%, of silver between 0% and 21%, of iron between 0.5% and 4% and vanadium between 0.1% and 2.0%, intended to increase the tarnishing-resistance of alloys with a minimum content of gold of 75 wt % under environments in which Sulphur- and chlorine-compounds are present.
    Type: Application
    Filed: June 1, 2018
    Publication date: November 1, 2018
    Inventors: Sergio ARNABOLDI, Marco NAUER, Stefano GHIRINGHELLI
  • Discoloration-resistant gold alloy
    Patent number: 10030296
    Abstract: Alloy for the manufacturing of jewels or clock components with minimum concentrations of gold of 75 wt %, of copper between 5% and 21%, of silver between 0% and 21%, of iron between 0.5% and 4% and vanadium between 0.1% and 2.0%, intended to increase the tarnishing-resistance of alloys with a minimum content of gold of 75 wt % under environments in which sulphur- and chlorine-compounds are present.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: July 24, 2018
    Assignee: ARGOR-HERAEUS SA
    Inventors: Sergio Arnaboldi, Marco Nauer, Stefano Ghiringhelli
  • DISCOLORATION-RESISTANT GOLD ALLOY
    Publication number: 20150345001
    Abstract: Alloy for the manufacturing of jewels or clock components with minimum concentrations of gold of 75 wt %, of copper between 5% and 21%, of silver between 0% and 21%, of iron between 0.5% and 4% and vanadium between 0.1% and 2.0%, intended to increase the tarnishing-resistance of alloys with a minimum content of gold of 75 wt % under environments in which sulphur- and chlorine-compounds are present.
    Type: Application
    Filed: December 2, 2013
    Publication date: December 3, 2015
    Applicant: ARGOR-HERAEUS SA
    Inventors: Sergio ARNABOLDI, Marco NAUER, Stefano GHIRINGHELLI