US3396777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for impregnating porous solids
Assignee: Dow Chemical Co
•
Filing: 1966-06-01
•
Granted: 1968-08-13
•
Expires: 1986-06-01
Abstract
No abstract record available.
Inventors
- 👤 Jr John N Reding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; C04B41/45; C04B41/50; C04B41/51; C04B41/80; C04B41/81; C04B41/85; C04B41/88; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12007; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A PROCESS FOR IMPREGNATING POROUS SOLIDS WITH METALS WHICH COMPRISES (A) PROVIDING A CONTAINER OPEN TO THE ATMOSPHERE ONLY AT ONE END, (B) PROVIDING A MOLTEN BATH OF A METAL, (C) INTRODUCING A PARTICULATE PROUS SOLID INTO SAID CONTAINER AND COVERING SAID OPEN END WITH A COVER CONTAINING PERFORATIONS SMALLER THAN THE PARTICLE SIZE OF SAID POROUS SOLID, SAID CONTAINER CAVITY AND THE PORES OF THE POROUS SOLID CONTAINING AN ATMOSPHERE WHICH IS AT LEAST PARTIALLY REACTIVE WITH SAID MOLTEN METAL, (D) IMMERSING THE PERFORATED END OF THE CONTAINER BELOW THE SURFACE OF THE MOLTEN METAL, (E) MAINTAINING THE PERFORATED END OF THE CONTAINER SUBMERGED IN THE MOLTEN METAL FOR A PREDETERMINED PERIOD OF TIME SUFFICIENT THAT THE REACTIVE ATMOSPHERE IN THE VESSEL AND IN THE PORES OF THE POROUS SOLID REACTS WITH A PORTION OF THE MOLTEN METAL THEREBY FORMING A REDUCED PRESSURE AND DRAWING THE MOLTEN METAL INTO THE CONTAINER AND INTO THE PORES OF THE POROUS SOLID, (F) REMOVING THE COMTAINER FROM THE MOLTEN METAL, AND (G) REMOVING THE METAL IMPREGNATED SOLIDS FROM THE CONTAINER.
Claim 2
Dependent Claim
178 words
A PROCESS FOR IMPREGNATING POROUS SOLIDS WITH METALS WHICH COMPRISES (A) PROVIDING A CONTAINER OPEN TO THE ATMOSPHERE ONLY AT ONE END, (B) PROVIDING A MOLTEN BATH OF A METAL, (C) INTRODUCING A PARTICULATE PROUS SOLID INTO SAID CONTAINER AND COVERING SAID OPEN END WITH A COVER CONTAINING PERFORATIONS SMALLER THAN THE PARTICLE SIZE OF SAID POROUS SOLID, SAID CONTAINER CAVITY AND THE PORES OF THE POROUS SOLID CONTAINING AN ATMOSPHERE WHICH IS AT LEAST PARTIALLY REACTIVE WITH SAID MOLTEN METAL, (D) IMMERSING THE PERFORATED END OF THE CONTAINER BELOW THE SURFACE OF THE MOLTEN METAL, (E) MAINTAINING THE PERFORATED END OF THE CONTAINER SUBMERGED IN THE MOLTEN METAL FOR A PREDETERMINED PERIOD OF TIME SUFFICIENT THAT THE REACTIVE ATMOSPHERE IN THE VESSEL AND IN THE PORES OF THE POROUS SOLID REACTS WITH A PORTION OF THE MOLTEN METAL THEREBY FORMING A REDUCED PRESSURE AND DRAWING THE MOLTEN METAL INTO THE CONTAINER AND INTO THE PORES OF THE POROUS SOLID, (F) REMOVING THE COMTAINER FROM THE MOLTEN METAL, AND (G) REMOVING THE METAL IMPREGNATED SOLIDS FROM THE CONTAINER.
References Cited (Backward Citations)
US1053880A
Cited
US1555978A
Cited
US2192792A
Cited
US2665999A
Cited
US2671955A
Cited
US2881068A
Cited
US3235346A
Cited
US3166415A
Cited
US3364976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |