US3778236A
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, wherein the white copper base alloy consists essentially of nickel from 0.5 to 5 percent, zinc from 15 to 35 percent, manganese from 5 to 20 percent, balance copper, wherein the total of manganese plus zinc cannot exceed 40 percent. The article of the present invention is particularly desirable for articles of flatware or hollow ware.
Inventors
- 👤 A Goldman
- 👤 S Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:18
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
82 words
An article consisting essentially of a white 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 nickel from 0.5 to 5 percent, zinc from 15 to 35 percent, manganese from 5 to 20 percent, from 0.001 to 0.3 percent of a material selected from the group consisting of phosphorus, arsenic and antimony, balance copper, wherein the total of manganese plus zinc cannot exceed 40 percent.
Claim 5
Dependent Claim
90 words
An article consisting essentially of a white copper base alloy plated with a silver plating having a thickness of from 0.0001 to 0.010 inch, wherein the shite copper base alloy consists essentially of nickel from 0.5 to 5 percent, zinc from 15 to 35 percent, manganese from 5 to 20 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, wherein the total of manganese plus zinc cannot exceed 40 percent.
Claim 6
Dependent Claim
20 words
An article according to claim 1 wherein said copper alloy contains lead in an amount from 0.001 to 3 percent.
Claim 7
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 8
Dependent Claim
39 words
An article according to claim 1 wherein said copper alloy contains nickel in an amount from 3 to 5 percent, zinc in an amount from 28 to 33 percent and manganese in an amount from 5 to 12 percent.
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 |