US3034934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for processing of refractory metals
Assignee: General Electric Co
•
Filing: 1960-03-31
•
Granted: 1962-05-15
•
Expires: 1980-03-31
Abstract
No abstract record available.
Inventors
- 👤 Redden Thomas Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:44
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METHOD FOR PROCESSING A REFRACTORY METALS INGOT COMPRISING THE STEPS: COATING THE INGOT WITH A MATERIAL HAVING THE STRENGTH AND DEFORMATION CHARACTERISTICS OF THE IGNOT MATERIAL; HEATING THE COATED INGOT TO 15001650* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY SUBSTANTIALLY RECTANGULAR SHEET BAR HEATING THE SHEET BAR AT 1350-1600* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY RECRYSTALLIZE THE MATERIAL OF THE SHEET BAR HEATING THE SHEET BAR AT 1200-1350* C. AND THEN ROLLING THE HEATED SHEET BAR; HEATING THE ROLLED SHEET AT 1000-1150* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY RECRYSTALLIZE THE ROLLED SHEET HEATING THE ROLLED SHEET AT 1000-1150* C. AND THEN FURTHER ROLLING THE HEATED SHEET HEATING THE FURTHER ROLLED SHEET AT 1300-1400* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY RECRYSTALLIZE THE FURTHER ROLLED SHEET; AND THEN FURTHER WORKING THE ROLLED SHEET AT TEMPERATURES AT WHICH NO DANGER OF CONTATAMINATION FROM ATMOSPHERIC GASES IS PRESENT.
Claim 2
Independent Claim
156 words
A METHOD FOR PROCESSING A REFRACTORY METALS INGOT COMPRISING THE STEPS: COATING THE INGOT WITH A MATERIAL HAVING THE STRENGTH AND DEFORMATION CHARACTERISTICS OF THE IGNOT MATERIAL; HEATING THE COATED INGOT TO 15001650* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY SUBSTANTIALLY RECTANGULAR SHEET BAR HEATING THE SHEET BAR AT 1350-1600* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY RECRYSTALLIZE THE MATERIAL OF THE SHEET BAR HEATING THE SHEET BAR AT 1200-1350* C. AND THEN ROLLING THE HEATED SHEET BAR; HEATING THE ROLLED SHEET AT 1000-1150* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY RECRYSTALLIZE THE ROLLED SHEET HEATING THE ROLLED SHEET AT 1000-1150* C. AND THEN FURTHER ROLLING THE HEATED SHEET HEATING THE FURTHER ROLLED SHEET AT 1300-1400* C. TO RELIEVE STRESSES AND TO AT LEAST PARTIALLY RECRYSTALLIZE THE FURTHER ROLLED SHEET; AND THEN FURTHER WORKING THE ROLLED SHEET AT TEMPERATURES AT WHICH NO DANGER OF CONTATAMINATION FROM ATMOSPHERIC GASES IS PRESENT.
References Cited (Backward Citations)
US2197680A
Cited
US2767112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |