US3008744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite electrode nipple and method for producing same
Assignee: GREAT LAKES CARBON Corp
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Filing: 1958-09-22
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Granted: 1961-11-14
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Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Edward C Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:22
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/14; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD FOR PRODUCING A GRAPHITE BODY HAVING IMPROVED THERMAL EXPANSION PROPERTIES, COMPRISING EXTRUDING THROUGH A DIE A MIXTURE OF COMMINUTED COKE AND PITCH BINDER HEATED TO A PLASTIC STATE, SAID COKE BEING A NEEDLE-LIKE COKE, HAVING AN AVERAGE C.T.E. (300*800*C.) OF LESS THAN 25X10**-7, AND COMPRISING THE EXTRUDED PRODUCT IN THE PLASTIC STATE IN A CONTAINER IN THE LONGITUDINAL DIRECTION SO AS TO EFFECT AN INCREASE IN THE TRANSVERSE CROSS-SECTIONAL AREA OF SAID PIECE TO SUCH EXTENT THAT THE RATIO OF TRANSVERSE TO THE LONGITUDINAL AVERAGE C.T.E. (20*-1400*C.) OF THE COMPRESSED PRODUCT AFTER BAKING AND GRAPHITIZING WILL BE WITHIN THE RANGE OF ABOUT 1.2 TO ABOUT 1.5.
Claim 2
Independent Claim
108 words
A METHOD FOR PRODUCING A GRAPHITE BODY HAVING IMPROVED THERMAL EXPANSION PROPERTIES, COMPRISING EXTRUDING THROUGH A DIE A MIXTURE OF COMMINUTED COKE AND PITCH BINDER HEATED TO A PLASTIC STATE, SAID COKE BEING A NEEDLE-LIKE COKE, HAVING AN AVERAGE C.T.E. (300*800*C.) OF LESS THAN 25X10**-7, AND COMPRISING THE EXTRUDED PRODUCT IN THE PLASTIC STATE IN A CONTAINER IN THE LONGITUDINAL DIRECTION SO AS TO EFFECT AN INCREASE IN THE TRANSVERSE CROSS-SECTIONAL AREA OF SAID PIECE TO SUCH EXTENT THAT THE RATIO OF TRANSVERSE TO THE LONGITUDINAL AVERAGE C.T.E. (20*-1400*C.) OF THE COMPRESSED PRODUCT AFTER BAKING AND GRAPHITIZING WILL BE WITHIN THE RANGE OF ABOUT 1.2 TO ABOUT 1.5.
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) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |