US3046166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of brass
Assignee: Olin Corp
•
Filing: 1959-07-01
•
Granted: 1962-07-24
•
Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert F Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:13
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF WORKING COPPER-BASE ALLOYS COMPRISING SUBJECTING AN ALLOY SELECTED FROM THE CLASS CONSISTING OF COPPER-ZINC ALLOYS AND COPPER-NICKEL-ZINC ALLOYS TO AT LEAST ONE CONSECUTIVE SERIES OF STEPS CONSISTING OF COLD WORKING FOLLOWED BY HEAT TREATING OPERATIONS, SAID COLD WORKING OPERATION CONSISTING OF EFFECTING AT LEAST A 50% REDUCTION IN THE THICKNESS OF SAID METAL AND SAID HEAT TREATING OPERATION CONSISTING OF A STRESS-RELIEF ANNEAL OF SAID ALLOY BELOW ITS RECRYSTALLIZATION TEMPERATURE, AND FURTHER COLD WORKING SAID ALLOY WITH SAID FURTHER COLD WORKING EFFECTING AT LEAST AN ADDITIONAL 50 PERCENT REDUCTION IN THE THICKNESS OF SAID ALLOY.
Claim 2
Independent Claim
98 words
A METHOD OF WORKING COPPER-BASE ALLOYS COMPRISING SUBJECTING AN ALLOY SELECTED FROM THE CLASS CONSISTING OF COPPER-ZINC ALLOYS AND COPPER-NICKEL-ZINC ALLOYS TO AT LEAST ONE CONSECUTIVE SERIES OF STEPS CONSISTING OF COLD WORKING FOLLOWED BY HEAT TREATING OPERATIONS, SAID COLD WORKING OPERATION CONSISTING OF EFFECTING AT LEAST A 50% REDUCTION IN THE THICKNESS OF SAID METAL AND SAID HEAT TREATING OPERATION CONSISTING OF A STRESS-RELIEF ANNEAL OF SAID ALLOY BELOW ITS RECRYSTALLIZATION TEMPERATURE, AND FURTHER COLD WORKING SAID ALLOY WITH SAID FURTHER COLD WORKING EFFECTING AT LEAST AN ADDITIONAL 50 PERCENT REDUCTION IN THE THICKNESS OF SAID ALLOY.
References Cited (Backward Citations)
US2550474A
Cited
US2676123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |