Patent US3563705A successfully refreshed from Google Patents.
US3563705A
Expired / Lapsed
US
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Method of inhibiting puffing in the manufacture of graphite bodies
Assignee: GREAT LAKES CARBON CORP
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Filing: 1969-03-17
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Granted: 1971-02-16
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Expires: 1989-03-17
Abstract
Abstract THE IRREVERISBLE EXPANSION OF GRAPHITIC MATERIALS AT TEMPERATURES OF UP TO 2900%C., WHICH IS DUE TO THE EVOLUTION OF SULFUR FROM THE CARBON AGGREGATED USED AS STARTING MATERIAL, IS ELIMINATED BY INCORPORATION OF AS LITTLE AS 0.05 PART BY WEIGHT OF A TITANIUM OR ZIRCONIUM COMPOUND PER 100 PARTS OF CARBON AGGREGATE, E.G. TIO2, IN CONJUNCTION WITH THE CONVENTION "PUFFING" INHIBITORS OF THE ART.
Inventors
- 👤 Lloyd I Grindstaff
- 👤 Mack P Whittaker
- 👤 Michael F Baud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:37
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |