Patent US2642347A successfully refreshed from Google Patents.
US2642347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sodium carbide and acetylene
Assignee: EIDP Inc
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Filing: 1950-02-24
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Granted: 1953-06-16
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Expires: 1970-02-24
Abstract
No abstract record available.
Inventors
- 👤 Harvey N Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:33
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/935; C01P; C01P2006/00; C01P2006/60; C01P2006/80; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
A PROCESS WHICH COMPRISES REACTING SODIUM CARBONATE WITH CARBON AT A TEMPERATURE OF FROM 1050* C. TO ABOUT 1200* C. AND CONTACTING THE RESULTING GASEOUS MIXTURE OF CARBON MONOXIDE AND SODIUM VAPOR WITH A MASS OF STEEL BODIES, EACH HAVING A MASS EQUAL TO THAT OF A STEEL SPHERE OF ABOUT 0.25 TO 2 INCHES IN DIAMETER, SAID BODIES BEING MAINTAINED AT A TEMPERATURE OF 625 TO 780* C.
Claim 2
Dependent Claim
69 words
A PROCESS WHICH COMPRISES REACTING SODIUM CARBONATE WITH CARBON AT A TEMPERATURE OF FROM 1050* C. TO ABOUT 1200* C. AND CONTACTING THE RESULTING GASEOUS MIXTURE OF CARBON MONOXIDE AND SODIUM VAPOR WITH A MASS OF STEEL BODIES, EACH HAVING A MASS EQUAL TO THAT OF A STEEL SPHERE OF ABOUT 0.25 TO 2 INCHES IN DIAMETER, SAID BODIES BEING MAINTAINED AT A TEMPERATURE OF 625 TO 780* C.
Claim 3
Dependent Claim
33 words
A SOLID HEAT CONDUCTING BODY COATED WITH AN ADHERENT LAYER OF A HARD, DENSE, INTIMATE MIXTURE OF SODIUM CARBIDE AND SODIUM CARBONATE CONTAINING FROM ABOUT 20% TO 39.76% BY WEIGHT OF SODIUM CARBIDE.
Claim 4
Dependent Claim
33 words
A SOLID HEAT CONDUCTING BODY COATED WITH AN ADHERENT LAYER OF A HARD, DENSE, INTIMATE MIXTURE OF SODIUM CARBIDE AND SODIUM CARBONATE CONTAINING FROM ABOUT 20% TO 39.76% BY WEIGHT OF SODIUM CARBIDE.
References Cited (Backward Citations)
US2162619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |