US2645583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing carbon base pastes
Assignee: Pechiney SA
•
Filing: 1949-07-14
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Granted: 1953-07-14
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Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Stanko Stefan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:57
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; C04B33/00; C04B33/02; C04B33/025; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/12; C25C3/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
METHOD OF PRODUCING A CARBON PASTE FROM A BATCH OF FINELY DIVIDED SOLID CARBONACEOUS MATERIAL AND A BINDER FOR SAID CARBONACEOUS MATERIAL WHEREIN THE CARBONACEOUS MATERIAL CONSISTS OF PARTICLES OF VARIOUS SIZES, WHICH COMPRISES THE STEPS OF SEPARATING THE BATCH OF CARBONACEOUS MATERIAL INTO TWO FRACTIONS CONSTITUTED RESPECTIVELY OF RELATIVELY COARSE PARTICLES AND FINES WHEREBY THE SMALLEST-SIZED PARTICLES IN SAID FRACTION OF RELATIVELY COARSE PARTICALS ARE SUBSTANTIALLY SIMILAR IN SIZE TO THAT OF THE PORES OF THE LARGESTSIZED PARTICLES THEREIN, MIXING SAID BINDER WITH THE FRACTION OF COARSE PARTICLES UNTIL SUBSTANTIALLY ALL OF SAID COARSE PARTICLES ARE WETTED BY SAID BINDER, ADDING THE FINES TO THE WETTED COARSE PARTICLES AND CONTINUING THE MIXING OPERATION UNTIL NO FURTHER NOTICEABLE INCREASE IN THE HOMOGENEITY OF THE RESULTANT MIXTURE IS OBSERVED.
Claim 2
Dependent Claim
128 words
METHOD OF PRODUCING A CARBON PASTE FROM A BATCH OF FINELY DIVIDED SOLID CARBONACEOUS MATERIAL AND A BINDER FOR SAID CARBONACEOUS MATERIAL WHEREIN THE CARBONACEOUS MATERIAL CONSISTS OF PARTICLES OF VARIOUS SIZES, WHICH COMPRISES THE STEPS OF SEPARATING THE BATCH OF CARBONACEOUS MATERIAL INTO TWO FRACTIONS CONSTITUTED RESPECTIVELY OF RELATIVELY COARSE PARTICLES AND FINES WHEREBY THE SMALLEST-SIZED PARTICLES IN SAID FRACTION OF RELATIVELY COARSE PARTICALS ARE SUBSTANTIALLY SIMILAR IN SIZE TO THAT OF THE PORES OF THE LARGESTSIZED PARTICLES THEREIN, MIXING SAID BINDER WITH THE FRACTION OF COARSE PARTICLES UNTIL SUBSTANTIALLY ALL OF SAID COARSE PARTICLES ARE WETTED BY SAID BINDER, ADDING THE FINES TO THE WETTED COARSE PARTICLES AND CONTINUING THE MIXING OPERATION UNTIL NO FURTHER NOTICEABLE INCREASE IN THE HOMOGENEITY OF THE RESULTANT MIXTURE IS OBSERVED.
References Cited (Backward Citations)
US1317497A
Cited
US2563285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |