US3338993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibition of coke puffing
Assignee: GREAT LAKES CARBON Corp
•
Filing: 1964-07-01
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Granted: 1967-08-29
•
Expires: 1984-07-01
Abstract
No abstract record available.
Inventors
- 👤 Leslie H Juel
- 👤 Robert T Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:39
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C01; C01B; C01B32/00; C01B32/20; C01B32/205; C04B35/532; C10; C10B; C10B57/00; C10B57/04; C10B57/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF PRODUCING A GRAPHITE ARTICLE FROM A GREEN CARBONACEOUS SHAPED BODY MADE FROM PETROLEUM COKE WHICH HAS PUFFING CHARACTERISTICS DURING GRAPHITIZATION, AND INHIBITING THE VOLUMETRIC EXPANSION OF SAID BODY DURING GRAPHITIZATION WHICH COMPRISES MIXING SAID PETROLEUM COKE WITH A PUFFING INHIBITING AMOUNT OF AN ALKALINE EARTH METAL FLUORIDE SELECTED FROM THE GROUP CONSISTING OF CALCIUM FLUORIDE, MAGNESIUM FLUORIDE, STRONTIUM FLUORIDE AND BARIUM FLUORIDE, AND MIXTURES THEREOF, FORMING THE MIXTURE INTO A GREEN BODY OF THE DESIRED SHAPE, AND BAKING AND GRAPHITIZING SAID BODY.
Claim 2
Independent Claim
85 words
A METHOD OF PRODUCING A GRAPHITE ARTICLE FROM A GREEN CARBONACEOUS SHAPED BODY MADE FROM PETROLEUM COKE WHICH HAS PUFFING CHARACTERISTICS DURING GRAPHITIZATION, AND INHIBITING THE VOLUMETRIC EXPANSION OF SAID BODY DURING GRAPHITIZATION WHICH COMPRISES MIXING SAID PETROLEUM COKE WITH A PUFFING INHIBITING AMOUNT OF AN ALKALINE EARTH METAL FLUORIDE SELECTED FROM THE GROUP CONSISTING OF CALCIUM FLUORIDE, MAGNESIUM FLUORIDE, STRONTIUM FLUORIDE AND BARIUM FLUORIDE, AND MIXTURES THEREOF, FORMING THE MIXTURE INTO A GREEN BODY OF THE DESIRED SHAPE, AND BAKING AND GRAPHITIZING SAID BODY.
References Cited (Backward Citations)
GB190803060A
Cited
US2814076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |