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US3772092A
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Copper base alloys
Assignee: Olin Corp
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Filing: 1971-11-05
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Granted: 1973-11-13
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Expires: 1991-11-05
Abstract
Abstract The disclosure teaches novel copper base alloys having improved toughness and stress corrosion resistance. The copper alloys contain from 12.5 to 30 percent nickel, from 12.5 to 30 percent manganese, a material selected from the group consisting of aluminum from 0.01 to 5 percent, boron from 0.001 to 0.1 percent, magnesium from 0.01 to 5 percent and mixtures thereof and zinc from 0.1 to 3.5 percent.
Inventors
- 👤 S Shapiro
- 👤 A Goldman
- 👤 D Tyler
- 👤 R Lanam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:34
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06; C22C9/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
An alloy according to claim 1 wherein the nickel content is from 15 to 25 percent and the manganese content is from 15 to 25 percent.
Claim 2
Dependent Claim
19 words
An alloy according to claim 1 wherein said material is aluminum in an amount from 0.6 to 5 percent.
Claim 3
Dependent Claim
19 words
An alloy according to claim 1 wherein said material is magnesium in an amount from 0.6 to 5 percent.
Claim 4
Dependent Claim
19 words
An alloy according to claim 1 wherein said material is aluminum in an amount from 0.01 to 0.75 percent.
Claim 5
Dependent Claim
19 words
An alloy according to claim 1 wherein said material is magnesium in an amount from 0.01 to 0.75 percent.
Claim 6
Dependent Claim
16 words
An alloy according to claim 1 wherein the zinc content is from 1 to 3 percent.
Claim 7
Dependent Claim
29 words
An alloy according to claim 1 containing a material selected from the group consisting of iron from 0.05 to 1 percent, cobalt from 0.05 to 1 percent mixtures thereof.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |