Patent US2597964A successfully refreshed from Google Patents.
US2597964A
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Fluid impervious carbon article and method of making same
Assignee: Union Carbide Corp
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Filing: 1951-11-09
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Granted: 1952-05-27
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Expires: 1971-11-09
Abstract
No abstract record available.
Inventors
- 👤 Lester L Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/249957; Y10T428/249967; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD WHICH COMPRISES PRODUCING, IN SITU IN, AND INTEGRAL WITH THE PORE WALLS OF, AT LEAST THOSE PORES OF A POROUS CARBON ARTICLE AT ITS SURFACE PORTIONS, A CARBIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, VANADIUM, CHROMIUM, TITANIUM, ZIRCONIUM, AND TANTALUM; IMPREGNATING SUCH CARBIDED PORES WITH A MOLTEN SILICEOUS MATERIAL HAVING A WORKING POINT OF AT LEAST 1000* C.; AND SOLIDIFYING SAID MATERIAL IN SITU BY COOLING, THUS RENDERING SAID ARTICLES SUBSTANTIALLY IMPERVIOUS TO FLUIDS.
Claim 2
Independent Claim
80 words
A METHOD WHICH COMPRISES PRODUCING, IN SITU IN, AND INTEGRAL WITH THE PORE WALLS OF, AT LEAST THOSE PORES OF A POROUS CARBON ARTICLE AT ITS SURFACE PORTIONS, A CARBIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, VANADIUM, CHROMIUM, TITANIUM, ZIRCONIUM, AND TANTALUM; IMPREGNATING SUCH CARBIDED PORES WITH A MOLTEN SILICEOUS MATERIAL HAVING A WORKING POINT OF AT LEAST 1000* C.; AND SOLIDIFYING SAID MATERIAL IN SITU BY COOLING, THUS RENDERING SAID ARTICLES SUBSTANTIALLY IMPERVIOUS TO FLUIDS.
References Cited (Backward Citations)
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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) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |