Patent EP0545002A1 successfully refreshed from Google Patents.
US2848424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing carbon electrodes and a paste therefor
Assignee: Pechiney SA
•
Filing: 1955-11-07
•
Granted: 1958-08-19
•
Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Stanko Stefan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:17
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/12; C25C3/125; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C25B11/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A BINDER SUITABLE IN THE PREPARATION OF CARBON PASTE FOR USE IN THE PRODUCTION OF ELECTRODES, CONSISTING ESSENTIALLY OF A PITCH HAVING THE FOLLOWING CHARACTERISTICS: SOFTENING POINT, KRAMER-SARNOW, BETWEEN 70-85*C.; COKING RESIDUE, IN EXCESS 50% BY WEIGHT OF THE INITIAL PITCH; PROPORTION OF BENZENE INSOLUBLE RESINS AND RESINS SOLUBLE IN ANTHRACENE OILS, NOT LESS THAN 20% BY WEIGHT OF THE PITCH; RESIDUE UPON COKING OF SAID RESINS, NOT LESS THAN 89% BY WEIGHT OF SAID RESINS.
Claim 2
Dependent Claim
76 words
A BINDER SUITABLE IN THE PREPARATION OF CARBON PASTE FOR USE IN THE PRODUCTION OF ELECTRODES, CONSISTING ESSENTIALLY OF A PITCH HAVING THE FOLLOWING CHARACTERISTICS: SOFTENING POINT, KRAMER-SARNOW, BETWEEN 70-85*C.; COKING RESIDUE, IN EXCESS 50% BY WEIGHT OF THE INITIAL PITCH; PROPORTION OF BENZENE INSOLUBLE RESINS AND RESINS SOLUBLE IN ANTHRACENE OILS, NOT LESS THAN 20% BY WEIGHT OF THE PITCH; RESIDUE UPON COKING OF SAID RESINS, NOT LESS THAN 89% BY WEIGHT OF SAID RESINS.
References Cited (Backward Citations)
GB659261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |