Patents by Inventor UVON TOLBERT

UVON TOLBERT 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).

  • Metal alloy for coin production
    Patent number: 10472703
    Abstract: The metal alloy is a possible replacement for/alternative to cupronickel cladding material used on currently-circulating clad coins. In the preferred embodiment, the (steel) metal alloy cladding material comprises 73-77% iron, 22-26% nickel, 0.2-0.5% carbon, and 1-5% manganese. The cladding material has an International Annealed Copper Standard (IACS) conductivity of less than 2%, a permeability of approximately 1.0-1.1, and a hardness value of 50-70 HRC 15 T (Rockwell Hardness). In alternative embodiments, the steel alloy comprises a monolithic coin or a core that may be plated with other metals.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 12, 2019
    Assignee: The United States Mint
    Inventors: Tsineng T. Ying, Richard R. Robidoux, Uvon Tolbert
  • METAL ALLOY FOR COIN PRODUCTION
    Publication number: 20190106772
    Abstract: The metal alloy is a possible replacement for/alternative to cupronickel cladding material used on currently-circulating clad coins. In the preferred embodiment, the (steel) metal alloy cladding material comprises 73-77% iron, 22-26% nickel, 0.2-0.5% carbon, and 1-5% manganese. The cladding material has an International Annealed Copper Standard (IACS) conductivity of less than 2%, a permeability of approximately 1.0-1.1, and a hardness value of 50-70 HRC 15 T (Rockwell Hardness). In alternative embodiments, the steel alloy comprises a monolithic coin or a core that may be plated with other metals.
    Type: Application
    Filed: April 2, 2018
    Publication date: April 11, 2019
    Inventors: TSINENG T. YING, RICHARD R. ROBIDOUX, UVON TOLBERT