US2881100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of impregnating a carbon electrode with a drying oil
Assignee: Diamond Shamrock Corp
•
Filing: 1955-06-21
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Granted: 1959-04-07
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Expires: 1975-06-21
Abstract
No abstract record available.
Inventors
- 👤 Carl C Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:26
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C25B11/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN THE METHOD OF TREATING A POROUS CARBON ELECTRODE INCLUDING THE STEPS OF IMPREGNATING SAID ELECTRODE WITH A DRYING OIL AND HEATING THE THUS-IMPREGNATED ELECTRODE TO EFFECT POLYMERIZATION OF SAID DRYING OIL, THE IMPROVEMENT WHICH COMPRISES COMBINING SAID DRYING OIL WITH A MIXTURE OF LEAD AND COBALT NAPHTHENATES, SAID MIXTURE CONTAINING APPROXIMATELY FROM 28-91% OF COBALT NAPHTHENATE AND FROM9% TO 72% OF LEAD NAPHTHENATE, THE AMOUNT OF SAID MIXTURE BEING FROM APPROXIMATELY 47 TO 10% OF THE WEIGHT OF SAID DRYING OIL.
Claim 2
Dependent Claim
82 words
IN THE METHOD OF TREATING A POROUS CARBON ELECTRODE INCLUDING THE STEPS OF IMPREGNATING SAID ELECTRODE WITH A DRYING OIL AND HEATING THE THUS-IMPREGNATED ELECTRODE TO EFFECT POLYMERIZATION OF SAID DRYING OIL, THE IMPROVEMENT WHICH COMPRISES COMBINING SAID DRYING OIL WITH A MIXTURE OF LEAD AND COBALT NAPHTHENATES, SAID MIXTURE CONTAINING APPROXIMATELY FROM 28-91% OF COBALT NAPHTHENATE AND FROM9% TO 72% OF LEAD NAPHTHENATE, THE AMOUNT OF SAID MIXTURE BEING FROM APPROXIMATELY 47 TO 10% OF THE WEIGHT OF SAID DRYING OIL.
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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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |