US4052204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary spinodal copper alloys
Assignee: AT&T Inc
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Filing: 1976-05-11
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Granted: 1977-10-04
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Expires: 1996-05-11
Abstract
Abstract Copper alloys are disclosed which contain nickel and tin and Fe, Zn, Mn, Zr, Nb, Cr, Al, or Mg in amounts within specified limits. When cold worked and aged according to a critical schedule these alloys develop a predominantly spinodal structure which renders them strong as well as ductile. The disclosed alloys are useful, for example, in the manufacture of components of electrical apparatus such as springs, connectors and relay elements.
Inventors
- 👤 John Travis Plewes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:13
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
Cold worked and aged spinodal copper alloys consisting essentially of nickel in an amount of from 2-20%, tin in an amount of from 2-8%, an additional element selected from the group consisting of Fe in an amount of from 2 to 15%, Zn in an amount of from 2 to 10%, and Mn in an amount of from 2 to 15%, and remainder copper.
Claim 2
Dependent Claim
64 words
Cold worked and aged spinodal copper alloys consisting essentially of nickel in an amount of from 2-20%, tin in an amount of from 2-8%, an additional element selected from the group consisting of Fe in an amount of from 2 to 15%, Zn in an amount of from 2 to 10%, and Mn in an amount of from 2 to 15%, and remainder copper.
Claim 3
Dependent Claim
17 words
Copper alloys of claim 1 and containing at least 5% of an element selected from said group.
Claim 4
Dependent Claim
22 words
Copper alloys of claim 1 containing at least two elements selected from said group in a combined amount of at most 15%.
Claim 5
Dependent Claim
73 words
Cold-worked and aged spinodal copper alloys consisting essentially of nickel in an amount of from 2-20%, tin in an amount of from 2-8%, at least one additional element selected from the group consisting of Zr in an amount of from 0.05-0.2%, Nb in an amount of from 0.1-0.3%, Cr in an amount of from 0.5-1%, Al in an amount of from 0.5-1.5%, and Mg in an amount of from 0.5-1%, and remainder copper.
Claim 6
Dependent Claim
73 words
Cold-worked and aged spinodal copper alloys consisting essentially of nickel in an amount of from 2-20%, tin in an amount of from 2-8%, at least one additional element selected from the group consisting of Zr in an amount of from 0.05-0.2%, Nb in an amount of from 0.1-0.3%, Cr in an amount of from 0.5-1%, Al in an amount of from 0.5-1.5%, and Mg in an amount of from 0.5-1%, and remainder copper.
Claim 7
Dependent Claim
22 words
Copper alloys of claim 4 containing at least two elements selected from said group in a combined amount of at most 1.5%.
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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |