US2705672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of water gas
Assignee: Consolidation Coal Co
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Filing: 1953-07-20
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Granted: 1955-04-05
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Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Gorin Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/482; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE METHOD OF PRODUCING WATER GAS WHICH COMPRISES FEEDING STEAM AND CARBONACEOUS SOLIDS INTO A REACTION ZONE CONTAINING CALCIUM OXIDE, MAINTAINING SAID CALCIUM OXIDE IN A FLUIDIZED STATE, MAINTAINING THE REACTION ZONE AT A TEMPERATURE BETWEEN 1500 AND 1750* F. AND AT A TOTAL
Claim 2
Independent Claim
44 words
THE METHOD OF PRODUCING WATER GAS WHICH COMPRISES FEEDING STEAM AND CARBONACEOUS SOLIDS INTO A REACTION ZONE CONTAINING CALCIUM OXIDE, MAINTAINING SAID CALCIUM OXIDE IN A FLUIDIZED STATE, MAINTAINING THE REACTION ZONE AT A TEMPERATURE BETWEEN 1500 AND 1750* F. AND AT A TOTAL
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |