US3634076A
Expired / Lapsed
US
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Die-casting alloy compositions
Assignee: Dow Chemical Co
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Filing: 1970-05-18
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Granted: 1972-01-11
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Expires: 1990-05-18
Abstract
Abstract A low liquidus temperature, ductile alloy containing 2-20 percent arsenic, and either manganese (15-45 percent), zinc (1550 percent) or a combination (15-55 percent) thereof, the balance being 40-65 percent copper, highly suitable for die casting.
Inventors
- 👤 George S Foerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
C; C22; C22C; C22C28/00; C22C18/00; C22C20/00; C22C9/00; C22C9/04; C22C9/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
37 words
The alloy of claim 1 wherein the metal present is manganese in an amount of from about 15 to about 30 percent, and the arsenic is present in an amount from about 5 to about 15 percent.
Claim 2
Dependent Claim
39 words
The alloy of claim 1 wherein the arsenic is present therein in an amount of from about 5 to about 15 percent, and the metal selected is zinc in an amount of from about 15 to about 45 percent.
Claim 3
Dependent Claim
42 words
The alloy of claim 1 wherein the arsenic is present therein in an amount of from about 5 to about 15 percent, and the metals selected are zinc and manganese in a total amount of from about 25 to about 45 percent.
Claim 4
Dependent Claim
47 words
The alloy of claim 1 wherein the manganese is present therein in an amount of from about 20 to about 30 percent, the zinc in an amount of from about 15 to about 25 percent, and arsenic in an amount from about 4 to about 8 percent.
Claim 5
Dependent Claim
16 words
The alloy of claim 1 further characterized as having a liquidus temperature below about 1,600* F.
References Cited (Backward Citations)
US2338756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |