Patent US3583864A successfully refreshed from Google Patents.
US3583864A
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Chemical process of producing an iron-copper alloy powder
Assignee: Ema Corp
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Filing: 1969-05-05
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Granted: 1971-06-08
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Expires: 1989-05-05
Abstract
Abstract A PARTICULATE ALLOY OF IRON INTIMATELY INFILTRATED WITH FROM ABOUT 1 TO ABOUT 50% BY WEIGHT OF COPPER IS PRODUCED BY MIXING A REDUCIBLE COMPOUND OF IRON WITH AN APPROPRIATE PROPORTION OF COPPER COMPOUND SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL COPPER AND REDUCIBLE COMPOUNDS OF COPPER, THE MIXTURE BEING HEATED UNDER REDUCING CONDITIONS AT A TEMPERATURE BETWEEN ABOUT 1010 AND 1150*C. UNTIL THE REDUCIBLE COMPOUNDS ARE SUBSTANTIALLY COMPLETELY REDUCED TO THE METAL STATE.
Inventors
- 👤 Arthur Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:14
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22
Claims Analysis
Total Claims: 0
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |