US3832306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of active carbon from halohydrocarbons
Assignee: Vista Chemical Co
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Filing: 1972-09-11
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Granted: 1974-08-27
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Expires: 1992-09-11
Abstract
Abstract A PROCEDD FOR PRODUCING ACTIVE CARBON AND HYDROGEN HALIDE BY MIXING A HALOHYDROCARBON WITH A LEWIS ACID CATALYST IN AN INERT ATMOSPHERE AND GRADUALLY INCREASING THE TEMPERATURE TO INITIATE AND MAINTAIN EVOLATION OF HYGROEN HALIDE, AND RECOVERING HYDROGEN HALIDE AND A CARBON MASS CONTAINING HIGHLY CRYSTALLINE CARBON.
Inventors
- 👤 H Hackett
- 👤 C Starks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:17
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/318; C01B32/33
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |