Patent DE720989C successfully refreshed from Google Patents.
Patent US2808322A successfully refreshed from Google Patents.
US2808322A
Expired / Lapsed
US
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Briquettes for metal recovery
Assignee: Dominion Magnesium Ltd
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Filing: 1954-03-11
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Granted: 1957-10-01
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Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Warrington Harold George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:50
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A BRIQUETTE CONSISTING OF A COMPACTED MIXTURE OF PARTICLES OF RAW MATERIALS FOR RECOVERY OF METAL THEREFROM, SAID COMPACTED MIXTURE HAVING A PAIR OF SHARPLY DEFINED EXPOSED SURFACES EACH OF MAJOR EXTENT, ONE OF SAID MAJOR SURFACES BEING OF CURVED CONTOUR, AND THE OTHER OF SAID MAJOR SURFACE BEING SUBSTANTIALLY PLANE AND IN BETWEEN ANY POINT ON SAID SECOND SURFACE AND SAID FIRST SURFACE BEING SUBSTANTIALLY LESS THAN THE WIDTH OF SAID SECOND SURFACE, AND A FIN OF IRREGULAR OUTLINE HAVING A SURFACE CONSTITUTING A CONTINUATION OF SAID PLANE SURFACE AND EXTENDING THEREAROUND.
Claim 2
Dependent Claim
93 words
A BRIQUETTE CONSISTING OF A COMPACTED MIXTURE OF PARTICLES OF RAW MATERIALS FOR RECOVERY OF METAL THEREFROM, SAID COMPACTED MIXTURE HAVING A PAIR OF SHARPLY DEFINED EXPOSED SURFACES EACH OF MAJOR EXTENT, ONE OF SAID MAJOR SURFACES BEING OF CURVED CONTOUR, AND THE OTHER OF SAID MAJOR SURFACE BEING SUBSTANTIALLY PLANE AND IN BETWEEN ANY POINT ON SAID SECOND SURFACE AND SAID FIRST SURFACE BEING SUBSTANTIALLY LESS THAN THE WIDTH OF SAID SECOND SURFACE, AND A FIN OF IRREGULAR OUTLINE HAVING A SURFACE CONSTITUTING A CONTINUATION OF SAID PLANE SURFACE AND EXTENDING THEREAROUND.
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |