US3778237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plated copper base alloy article
Assignee: Olin Corp
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Filing: 1972-03-29
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Granted: 1973-12-11
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Expires: 1992-03-29
Abstract
Abstract The instant disclosure teaches an improved article consisting essentially of a white copper base alloy plated with a silver plating. The white copper base alloy substrate consists essentially of a substantially nickel-free alloy containing manganese in an amount from 8 to 16 percent, zinc in an amount from 20 to 31 percent, balance essentially copper. The article of the present invention is particularly desirable for articles of flatware or hollow ware.
Inventors
- 👤 S Shapiro
- 👤 D Tyler
- 👤 M Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:43
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/04; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12896
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
An article according to claim 1 wherein said article is an article of flatware.
Claim 2
Dependent Claim
11 words
An article according to claim 2 including a pattern coined thereon.
Claim 3
Dependent Claim
15 words
An article according to claim 1 wherein said article is an article of hollow ware.
Claim 4
Dependent Claim
23 words
An article according to claim 1 wherein said copper alloy contains impurities in an amount up to 0.05 percent each, total 0.25 percent.
Claim 5
Dependent Claim
20 words
An article according to claim 1 wherein said copper alloy contains zinc in an amount from 22 to 29 percent.
Claim 6
Dependent Claim
20 words
An article according to claim 1 wherein said copper alloy contains manganese in an amount from 10 to 14 percent.
Claim 7
Dependent Claim
67 words
An article consisting essentially of a white substantially nickel-free copper base alloy plated with a silver plating having a thickness of from 0.0001 to 0.010 inch, wherein the white copper base alloy consists essentially of manganese from 8 to 16 percent, zinc from 20 to 31 percent, from 0.001 to 0.3 percent of a material selected from the group consisting of phosphorus, arsenic and antimony, balance copper.
Claim 8
Dependent Claim
75 words
An article consisting essentially of a white substantially nickel-free copper base alloy plated with a silver plating having a thickness of from 0.0001 to 0.010 inch, wherein the white copper base alloy consists essentially of manganese from 8 to 16 percent, zinc from 20 to 31 percent, from 0.001 to 0.3 percent of at least one material selected from the group consisting of aluminum, iron, tin, silicon, cobalt, magnesium, molybdenum and mixtures thereof, balance copper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |