Patent US3107973A successfully refreshed from Google Patents.
US3107973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming impermeable carbon articles
Assignee: Individual
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Filing: 1960-11-15
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Granted: 1963-10-22
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Expires: 1980-11-15
Abstract
No abstract record available.
Inventors
- 👤 Bickerdike Robert Lewis
- 👤 Hughes Garyth
- 👤 Watt William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:26
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR PRODUCING A SUBSTANTIALLY IMPERMEABLE FORMED CARBON ARTICLE WHICH COMPRISES CHARGING A MOULD WITH FINELY DIVIDED CARBON POWDER OF VERY SMALL PARTICLE SIZE, LIGHTLY CONSOLIDATING THE CARBON POWDER IN SAID MOULD, SUBJECTING THE CONSOLIDATED POWDER CHARGE WITHIN SAID MOULD TO A MOVING STREAM OF A GASEOUS HYDROCARBON WHILE AT A TEMPERATURE IN THE RANGE 500-1500*C. AND AT A PRESSURE IN THE RANGE SUB-ATMOSPHERIC TO JUST ABOVE ATMOSPHERIC TO BOND THE CARBON POWDER INTO A UNITARY, POROUS, FORMED CARBON ARTICLE, REMOVING THE FORMED UNITARY CARBON ARTICLE FROM THE MOULD, SUBJECTING THE FORMED CARBON ARTICLE TO AT LEAST ONE MORE TREATMENT WITH SAID GASEOUS HYDROCARBON AT A TEMPERATURE WITHIN THE RANGE 500-1500*C. AND AT A PRESSURE WITHIN THE RANGE SUBATMOSPHERIC TO JUST ABOVE ATMOSPHERIC TO PRODUCE A SUBSTANTIALLY IMPERMEABLE CARBON ARTICLE.
Claim 2
Dependent Claim
131 words
A PROCESS FOR PRODUCING A SUBSTANTIALLY IMPERMEABLE FORMED CARBON ARTICLE WHICH COMPRISES CHARGING A MOULD WITH FINELY DIVIDED CARBON POWDER OF VERY SMALL PARTICLE SIZE, LIGHTLY CONSOLIDATING THE CARBON POWDER IN SAID MOULD, SUBJECTING THE CONSOLIDATED POWDER CHARGE WITHIN SAID MOULD TO A MOVING STREAM OF A GASEOUS HYDROCARBON WHILE AT A TEMPERATURE IN THE RANGE 500-1500*C. AND AT A PRESSURE IN THE RANGE SUB-ATMOSPHERIC TO JUST ABOVE ATMOSPHERIC TO BOND THE CARBON POWDER INTO A UNITARY, POROUS, FORMED CARBON ARTICLE, REMOVING THE FORMED UNITARY CARBON ARTICLE FROM THE MOULD, SUBJECTING THE FORMED CARBON ARTICLE TO AT LEAST ONE MORE TREATMENT WITH SAID GASEOUS HYDROCARBON AT A TEMPERATURE WITHIN THE RANGE 500-1500*C. AND AT A PRESSURE WITHIN THE RANGE SUBATMOSPHERIC TO JUST ABOVE ATMOSPHERIC TO PRODUCE A SUBSTANTIALLY IMPERMEABLE CARBON ARTICLE.
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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |