Patent US2749604A successfully refreshed from Google Patents.
US2749604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metallic bodies
Assignee: Okonite Co
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Filing: 1952-04-22
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Granted: 1956-06-12
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 Latin Aubrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:37
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0408; C22C1/0416
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD WHICH COMPRISES MAKING A MIXTURE COMPRISING POWDERED ALUMINUM AND POWDERED LEAD IN WHICH THE LEAD CONTENT MAY RANGE FROM ABOUT 5% TO ABOUT 50% BY WEIGHT, COMPACTING THE MIXTURE AT A TEMPERATURE OF AROUND 250* C., AND THEN EXTRUDING AT AROUND 295* C. AT AN EXTRUSION PRESSURE OF 20 TONS PER SQUARE INCH, THE EXTRUSION RATION BEING ABOUT 30:1.
Claim 2
Independent Claim
61 words
THE METHOD WHICH COMPRISES MAKING A MIXTURE COMPRISING POWDERED ALUMINUM AND POWDERED LEAD IN WHICH THE LEAD CONTENT MAY RANGE FROM ABOUT 5% TO ABOUT 50% BY WEIGHT, COMPACTING THE MIXTURE AT A TEMPERATURE OF AROUND 250* C., AND THEN EXTRUDING AT AROUND 295* C. AT AN EXTRUSION PRESSURE OF 20 TONS PER SQUARE INCH, THE EXTRUSION RATION BEING ABOUT 30:1.
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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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |