US2563285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon electrodes
Assignee: GREAT LAKES CARBON Corp
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Filing: 1948-09-09
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Granted: 1951-08-07
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Expires: 1968-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick L Shea
- 👤 Leslie H Juel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:04
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C25B11/044; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR FORMING A CARBON ELECTRODE WHICH COMPRISES SEPARATING CALCINED COKE INTO PARTICLES LARGER THAN ABOUT 50 MESH AND COKE FLOUR SMALLER THAN ABOUT 50 MESH, MIXING THE PARTICLES WITH A HYDROCARBONACEOUS IMPREGNANT, SAID IMPREGNANT CHARACTERIZED BY BEING NORMALLY SOLID, MELTING BELOW ABOUT 80* C. AND BOILING AT ABOUT 280* C. TO ABOUT 360* C. AT 15 MM. OF MERCURY PRESSURE, SAID MIXING BEING CARRIED OUT AT A TEMPERATURE AT WHICH THE IMPREGNANT IS FREELY FLUID, TO IMPREGNATE SAID PARTICLES, THEREAFTER MIXING THE UNIMPREGNATED COKE FLOUR AND A PITCH BINDER MELTING HIGHER THAN SAID IMPREGNANT, WITH THE IMPREGNATED PARTICLES AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID BINDER, FORMING THE MIXTURE WHILE HOT INTO AN ELECTRODE AND BAKING IT.
Claim 2
Dependent Claim
121 words
A PROCESS FOR FORMING A CARBON ELECTRODE WHICH COMPRISES SEPARATING CALCINED COKE INTO PARTICLES LARGER THAN ABOUT 50 MESH AND COKE FLOUR SMALLER THAN ABOUT 50 MESH, MIXING THE PARTICLES WITH A HYDROCARBONACEOUS IMPREGNANT, SAID IMPREGNANT CHARACTERIZED BY BEING NORMALLY SOLID, MELTING BELOW ABOUT 80* C. AND BOILING AT ABOUT 280* C. TO ABOUT 360* C. AT 15 MM. OF MERCURY PRESSURE, SAID MIXING BEING CARRIED OUT AT A TEMPERATURE AT WHICH THE IMPREGNANT IS FREELY FLUID, TO IMPREGNATE SAID PARTICLES, THEREAFTER MIXING THE UNIMPREGNATED COKE FLOUR AND A PITCH BINDER MELTING HIGHER THAN SAID IMPREGNANT, WITH THE IMPREGNATED PARTICLES AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID BINDER, FORMING THE MIXTURE WHILE HOT INTO AN ELECTRODE AND BAKING IT.
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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |