US2673812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing carbonaceous molding compositions
Assignee: CD Patents Ltd
•
Filing: 1950-08-25
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Granted: 1954-03-30
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Expires: 1970-08-25
Abstract
No abstract record available.
Inventors
- 👤 Greaves Charles Desmond
- 👤 Atkins Bernard Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:42
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C04B33/00; C04B33/02; C04B33/13; C04B33/1305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF PRODUCING A CARBONACEOUS MOULDING COMPOSITION WHICH COMPRISES THE STEPS OF INTIMATELY MIXING FINELY SUB-DIVIDED COAL, WATER, BETWEEN 1% AND 2.5% BY WEIGHT OF THE COAL OF SODIUM CARBOXYMETHYL CELLULOSE, AND A DEHYDROGENATING AGENT NON-REACTIVE TO WATER SELECTED FROM THE GROUP CONSISTING OF SULFUR AND SELENIUM, SAID AGENT COMPRISING ABOUT 2% BY WEIGHT-OF THE COAL.
Claim 2
Independent Claim
57 words
A METHOD OF PRODUCING A CARBONACEOUS MOULDING COMPOSITION WHICH COMPRISES THE STEPS OF INTIMATELY MIXING FINELY SUB-DIVIDED COAL, WATER, BETWEEN 1% AND 2.5% BY WEIGHT OF THE COAL OF SODIUM CARBOXYMETHYL CELLULOSE, AND A DEHYDROGENATING AGENT NON-REACTIVE TO WATER SELECTED FROM THE GROUP CONSISTING OF SULFUR AND SELENIUM, SAID AGENT COMPRISING ABOUT 2% BY WEIGHT-OF THE COAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |