Method of making aureate colored coins, medallions and tokens and products so made

Patent 4579761 Issued on April 1, 1986. Estimated Expiration Date:

July 31, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3108006

3834879

Process for the production of nickel clad steel coinage blank
Patent #: 4089753
Issued on: 05/16/1978
Inventor: McMullen, et al.

Process for the production of coin blanks
Patent #: 4176014
Issued on: 11/27/1979
Inventor: Ruscoe , et al.

Method of forming blanks for coins
Patent #: 4247374
Issued on: 01/27/1981
Inventor: Ruscoe , et al.

Gold-colored coin material
Patent #: 4401488
Issued on: 08/30/1983
Inventor: Prinz , et al.

Gold-colored coin material Patent #: 4436790
Issued on: 03/13/1984
Inventor: Prinz , et al.

Inventors

Assignee

Sherritt Gordon Mines Limited

Application

No. 06/761333 filed on 07/31/1985

US Classes:

428/542.8, ARTICLE OF INTERMEDIATE SHAPE (E.G., BLANK, PARISON, PREFORM, ETC.)205/143, Rotary (e.g., barrel plating, etc.)205/149, Coating predominantly single metal or alloy substrate of specified shape205/209, Heating substrate other than by contact with liquid205/226, Coating is fused (e.g., reflowing, flow brightening, etc.)205/241, Including tin (e.g., bronze, etc.)40/27.5, Coin or token type428/579, Disk428/658, Zn-base component428/66.5, Ornamental, decorative, pattern, or indicia428/674, Cu-base component428/675, Next to Co-, Cu-, or Ni-base component72/47Metal coating

Examiners

Primary: Kaplan, G. L.

Attorney, Agent or Firm

Stevens, Davis, Miller & Mosher

International Classes

C25D 3/56 (20060101)
C25D 7/00 (20060101)
C25D 3/58 (20060101)

Foreign Application Priority Data

1984-05-01 CA

Abstract

An aureate coin, coin blank, medallion, medallion blank, token or token blank has a coin-shaped core with opposed faces and a peripheral side edge and of mintable metallic material. An electroplated coating of copper and tin completely encases the core and provides a golden appearance. The electroplated coating contains from about 8 to about 16% tin by weight and has a thickness of from about 10 to about 150 μm.