US4436790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold-colored coin material
Assignee: Vereinigte Deutsche Metallwerke AG
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Filing: 1982-04-22
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Granted: 1984-03-13
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Expires: 2002-04-22
Abstract
Abstract A copper-base alloy which consists essentially of 1 to 7% tin and 1 to 7% aluminum and contains aluminum and tin in a total not in excess of 10%, balance copper and inevitable impurities which are due to the manufacturer, is disclosed. It is useful as a coinage material of gold color.
Inventors
- 👤 Bruno Prinz
- 👤 Manfred B. Rockel
- 👤 Gunther Rudolph
- 👤 Ulrich Heubner
- 👤 Hugo Zoebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:53
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01; C22C9/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
A coin made of a copper base alloy consisting essentially of 1 to 7 percent tin and 1 to 7 percent aluminum and containing aluminum and tin in a total not in excess of 10 percent, balanced copper and inevitable impurities due to the manufacture.
Claim 2
Dependent Claim
45 words
A coin made of a copper base alloy consisting essentially of 1 to 7 percent tin and 1 to 7 percent aluminum and containing aluminum and tin in a total not in excess of 10 percent, balanced copper and inevitable impurities due to the manufacture.
Claim 3
Dependent Claim
22 words
A coin according to claim 1 wherein the contents of tin and aluminum have a total not in excess of 9 percent.
Claim 4
Dependent Claim
19 words
A coin according to claim 1 which contains 5 to 7 percent tin and 1 to 3 percent aluminum.
Claim 5
Dependent Claim
19 words
A coin according to claim 1 which contains 2.5 to 3.5 percent tin and 1.5 to 5.5 percent aluminum.
Claim 6
Dependent Claim
21 words
A coin according to claim 1 comprising a core and a cladding, said cladding consisting essentially of said copper base alloy.
Claim 7
Dependent Claim
11 words
A coin according to claim 5 wherein said core comprises nickel.
References Cited (Backward Citations)
US1630999A
Cited
US1881257A
Cited
US2133845A
Cited
US2231940A
Cited
US4292377A
Cited
US4330599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |