US3333994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of products of beryllium or beryllium alloy
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1964-10-06
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Granted: 1967-08-01
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Expires: 1984-10-06
Abstract
No abstract record available.
Inventors
- 👤 Mallen Jose
- 👤 Weisz Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:58
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; B; B21; B21C; B21C1/00; B21C23/00; B21C23/002; B21C23/32; B21C37/00; C; C22; C22C; C22C25/00; C22F; C22F1/00; C22F1/16; G21C3/07; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD FOR MANUFACTURING TUBES OF BERYLLIUM AND BERYLLIUM ALLOY COMPRISIG THE STEPS OF FIRST WORKING A CAST INGOT OF BERYLLIUM AND BERYLLIUM ALLOY AT ABOUT 950*C. WITH AN AREA REDUCTION OF ABOUT 6, THEN FURTHER WORKING SAID INGOT AT ABOUT 950*C. WITH AN AREA OF REDUCTION OF ABOUT 15, THEN SUBJECTING THE DRAWN INGOT TO STRESS RELIEF WITH PLASTIC DEFORMATION IN TENSION AT A TEMPERATURE APPROACHING RECRYSTALLIZATION TEMPERATURE OF THE METAL IN THE RANGE OF 550-750*C. AND THEN ANNEALING AT A TEMPERATURE OF ABOUT 750*C. FOR ABOUT FOUR HOURS.
Claim 2
Independent Claim
90 words
A METHOD FOR MANUFACTURING TUBES OF BERYLLIUM AND BERYLLIUM ALLOY COMPRISIG THE STEPS OF FIRST WORKING A CAST INGOT OF BERYLLIUM AND BERYLLIUM ALLOY AT ABOUT 950*C. WITH AN AREA REDUCTION OF ABOUT 6, THEN FURTHER WORKING SAID INGOT AT ABOUT 950*C. WITH AN AREA OF REDUCTION OF ABOUT 15, THEN SUBJECTING THE DRAWN INGOT TO STRESS RELIEF WITH PLASTIC DEFORMATION IN TENSION AT A TEMPERATURE APPROACHING RECRYSTALLIZATION TEMPERATURE OF THE METAL IN THE RANGE OF 550-750*C. AND THEN ANNEALING AT A TEMPERATURE OF ABOUT 750*C. FOR ABOUT FOUR HOURS.
References Cited (Backward Citations)
US2872363A
Cited
GB868064A
Cited
GB884410A
Cited
US3065117A
Cited
GB884108A
Cited
GB919423A
Cited
US3234052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |