US3105780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of decarburizing ferrous materials
Assignee: General Electric Co
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Filing: 1960-09-19
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Granted: 1963-10-01
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Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John R Low
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:40
CPC Classifications
C; C21; C21D; C21D3/00; C21D3/02; C21D3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF DECARBURIZING A FERROUS MATERIAL CONTAINING CARBON UP TO 0.05 WEIGHT PERCENT WHICH COMPRISES HEATING SAID MATERIAL IN A DECARBURIZING ATMOSPHERE TO AN INITIAL TEMPERATURE BELOW ANY AUSTENITE FORMATION TO REDUCE THE CARBON CONTENT THEREOF AT THIS TEMPERATURE, AND AS THE CARBON CONTENT IS REDUCED TO BELOW THE MAXIMUM SOLUBILITY LIMIT OF CARBON IN FERRITE, RAISING THE TEMPERATURE OF SAID MATERIAL TO AT LEAST ONE ADDITIONAL HIGHER TEMPERATURE BELOW ANY AUSTENITE FORMATION TO REDUCE FURTHER THE CARBON CONTENT.
Claim 2
Independent Claim
80 words
A METHOD OF DECARBURIZING A FERROUS MATERIAL CONTAINING CARBON UP TO 0.05 WEIGHT PERCENT WHICH COMPRISES HEATING SAID MATERIAL IN A DECARBURIZING ATMOSPHERE TO AN INITIAL TEMPERATURE BELOW ANY AUSTENITE FORMATION TO REDUCE THE CARBON CONTENT THEREOF AT THIS TEMPERATURE, AND AS THE CARBON CONTENT IS REDUCED TO BELOW THE MAXIMUM SOLUBILITY LIMIT OF CARBON IN FERRITE, RAISING THE TEMPERATURE OF SAID MATERIAL TO AT LEAST ONE ADDITIONAL HIGHER TEMPERATURE BELOW ANY AUSTENITE FORMATION TO REDUCE FURTHER THE CARBON CONTENT.
References Cited (Backward Citations)
US2534141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |