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Patent US3133870A successfully refreshed from Google Patents.
US3133870A
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Extractive distillation of hydrazine with 1, 2, 6-hexanetriol
Assignee: Honeywell International Inc
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Filing: 1961-11-16
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Granted: 1964-05-19
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 George A Elliott
- 👤 Jr William P Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:15
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
IN A PROCESS FOR THE SEPARATION OF WATER FROM AQUEOUS HYDRAZINE BY SUBJECTING THE AQUEOUS HYDRAZINE TO EXTRACTIVE DISTILLATION WITH A SOLVENT UNDER EXTRACTIVE DISTILLATION CONDITIONS TO VAPORIZE AND REMOVE SUBSTANTIALLY PURE WATER, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE EXTRACTIVE DISTILLATION WITH 1,2,6-HEXANETRIOL SOLVENT.
Claim 2
Dependent Claim
44 words
IN A PROCESS FOR THE SEPARATION OF WATER FROM AQUEOUS HYDRAZINE BY SUBJECTING THE AQUEOUS HYDRAZINE TO EXTRACTIVE DISTILLATION WITH A SOLVENT UNDER EXTRACTIVE DISTILLATION CONDITIONS TO VAPORIZE AND REMOVE SUBSTANTIALLY PURE WATER, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE EXTRACTIVE DISTILLATION WITH 1,2,6-HEXANETRIOL SOLVENT.
References Cited (Backward Citations)
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Cited
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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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |