Patent US2870485A successfully refreshed from Google Patents.
US2870485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of powders of copper and copper alloys
Assignee: FW Berk and Co Ltd
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Filing: 1956-06-26
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Granted: 1959-01-27
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Expires: 1976-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jones William David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:05
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22F2009/0824; B22F2009/0828
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR THE MANUFACTURE OF A COPPER POWDER OF LOW APPARENT DENSITY WHICH COMPRISES INCORPORATING WITH SUBSTANTIALLY PURE COPPER SUCH A SMALL PROPORTION OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM CALCIUM, LITHIUM, ZIRCONIUM AND TITANIUM THAT THE COPPER REMAINS SUBSTANTIALLY PURE AND IN SUCH AMOUNT AS TO EFFECTIVELY CAUSE THE CONVERSION OF A MOLTEN MASS OF THE RESULTANT COPPER COMPOSITION SUBJECTED TO ATOMIZATION BY AN AQUEOUS LIQUID TO A COPPER POWDER OF LOW APPARENT DENSITY SUITABLE FOR THE PRODUCTION OF SINTERED ARTICLES, AND THEN ATOMIZING A MOLTEN MASS OF SUCH RESULTANT COPPER COMPOSITION BY MEANS OF SUCH AQUEOUS LIQUID TO CONVERT THE SAME INTO A COPPER POWDER OF LOW APPARENT DENSITY CONTANING AT LEAST APPROXIMATELY 98% OF COPPER AND LESS THAN APPROXIMATELY 1% OF SAID INCORPORATED METAL.
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE MANUFACTURE OF A COPPER POWDER OF LOW APPARENT DENSITY WHICH COMPRISES INCORPORATING WITH SUBSTANTIALLY PURE COPPER SUCH A SMALL PROPORTION OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM CALCIUM, LITHIUM, ZIRCONIUM AND TITANIUM THAT THE COPPER REMAINS SUBSTANTIALLY PURE AND IN SUCH AMOUNT AS TO EFFECTIVELY CAUSE THE CONVERSION OF A MOLTEN MASS OF THE RESULTANT COPPER COMPOSITION SUBJECTED TO ATOMIZATION BY AN AQUEOUS LIQUID TO A COPPER POWDER OF LOW APPARENT DENSITY SUITABLE FOR THE PRODUCTION OF SINTERED ARTICLES, AND THEN ATOMIZING A MOLTEN MASS OF SUCH RESULTANT COPPER COMPOSITION BY MEANS OF SUCH AQUEOUS LIQUID TO CONVERT THE SAME INTO A COPPER POWDER OF LOW APPARENT DENSITY CONTANING AT LEAST APPROXIMATELY 98% OF COPPER AND LESS THAN APPROXIMATELY 1% OF SAID INCORPORATED METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |