Patents Assigned to Hubbard-Hall, Inc.
  • Composition for stripping nickel from substrates and process
    Patent number: 6642199
    Abstract: A nickel stripping composition is disclosed. The composition can be contacted with a nickel plated article in an aqueous solution in order to remove the nickel. In accordance with the present invention, besides an oxidizing agent, the composition includes the combination of an organic amine and citric acid or salt. Alternatively, other amines containing particular substituent groups can be present in the solution in order to increase the nickel holding capacity of the solution.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: November 4, 2003
    Assignee: Hubbard-Hall, Inc.
    Inventors: Daniel Humphreys, Robert Farrell
  • Composition for stripping nickel from substrates and process
    Publication number: 20020155048
    Abstract: A nickel stripping composition is disclosed. The composition can be contacted with a nickel plated article in an aqueous solution in order to remove the nickel. In accordance with the present invention, besides an oxidizing agent, the composition includes the combination of an organic amine and citric acid or salt. Alternatively, other amines containing particular substituent groups can be present in the solution in order to increase the nickel holding capacity of the solution.
    Type: Application
    Filed: April 19, 2001
    Publication date: October 24, 2002
    Applicant: Hubbard-Hall, Inc.
    Inventors: Daniel Humphreys, Robert Farrell