US2572051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for conducting an endothermic chemical reaction involving both gaseous and solid feed materials
Assignee: Individual
•
Filing: 1945-04-20
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Granted: 1951-10-23
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Expires: 1965-04-20
Abstract
No abstract record available.
Inventors
- 👤 Parry Vernon Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:51
CPC Classifications
C; C10; C10J; C10J1/00; C10J1/213; B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; C10B; C10B47/00; C10B47/18; C10B49/00; C10B49/02; C10B49/04; C10B49/08; C10B51/00; C10J3/00; C10J3/46; C10J3/48; C10J3/485; C10J3/487; C22; C22B; C22B1/00; C22B1/02; C22B1/10; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00477; B01J2208/00495; B01J2208/00504; B01J2208/0053; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A METHOD FOR CONDUCTING AN ENDOTHERMIC CHEMICAL REACTION INVOLVING BOTH GASEOUS AND SOLID FEED MATERIALS WHICH COMPRISES PASSING SAID SOLIDS AND A PORTION OF SAID GASEOUS MATERIALS COCURRENTLY THROUGH AN EXTERNALLY-HEATED ANNULAR REACTION ZONE, WITHDRAWING GASEOUS PRODUCTS OF REACTION FROM A POINT NEAR THE ZONE OF MAXIMUM REACTION TEMPERATURE THROUGH AN EDUCATION ZONE INTERIOR OF SAID ANNULAR REACTION ZONE, SAID GAS EOUS PRODUCTS BEING PASSED IN COUNTERCURRENT IN-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |