US3615922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting grain growth in metal composites
Assignee: Olin Corp
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Filing: 1968-09-19
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Granted: 1971-10-26
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Expires: 1988-09-19
Abstract
Abstract A process for producing composite metal articles whereby a suitable grain size is obtained in the metal member having the lowest temperature of recrystallization suitable for mechanical deformation, and the article produced thereby.
Inventors
- 👤 Jerrold M Alyea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:31
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/013; B32B15/015; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917; Y10T428/12924
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
22 words
A process according to claim 1 wherein said element is iron and is present in an amount from 0.4 to 3.0 percent.
Claim 2
Dependent Claim
22 words
A process according to claim 1 wherein said element is cobalt and is present in an amount from 0.1 to 1.5 percent.
Claim 3
Dependent Claim
21 words
A process according to claim 1 wherein said element is phosphorus and is present in an amount up to 0.1 percent.
Claim 4
Dependent Claim
21 words
A process according to claim 1 wherein said element is calcium and is present in an amount up to 0.1 percent.
Claim 5
Dependent Claim
21 words
A process according to claim 1 wherein said brass component is bonded to two opposing sides of said iron base component.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |