US2623243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of agglomeration
Assignee: Azote et Produits Chimiques SA
•
Filing: 1947-01-08
•
Granted: 1952-12-30
•
Expires: 1967-01-08
Abstract
No abstract record available.
Inventors
- 👤 Marcel C Jean
- 👤 Robert L Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:58
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD FOR AGGLOMERATING FINES OF BITUMINOUS SCHISTS, OIL SHALES AND THE LIKE OIL-CONTAINING ROCKS, CONSISTING IN SIZING THE FINES TO FORM A MIXTURE, CONTAINING NO GRAINS ABOVE 3 MILLIMETERS, REMOVING THE ABSORBED AND OCCLUDED GASES FROM SAID FINES AND SUBMITTING THE MIXTURE TO A SUDDEN PRESSURE OF THE MAGNITUDE OF NOT SUBSTANTIALLY ABOVE 100 KG PER SQ. CM. AT A TEMPERATURE BELOW 100* C.
Claim 2
Independent Claim
65 words
A METHOD FOR AGGLOMERATING FINES OF BITUMINOUS SCHISTS, OIL SHALES AND THE LIKE OIL-CONTAINING ROCKS, CONSISTING IN SIZING THE FINES TO FORM A MIXTURE, CONTAINING NO GRAINS ABOVE 3 MILLIMETERS, REMOVING THE ABSORBED AND OCCLUDED GASES FROM SAID FINES AND SUBMITTING THE MIXTURE TO A SUDDEN PRESSURE OF THE MAGNITUDE OF NOT SUBSTANTIALLY ABOVE 100 KG PER SQ. CM. AT A TEMPERATURE BELOW 100* C.
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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) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |