US2675298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrazine manufacture
Assignee: Mathieson Chemical Corp
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Filing: 1950-03-25
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Granted: 1954-04-13
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Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 John E Weiler
- 👤 Joseph F Weiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN THE MANUFACTURE OF HYDRAZINE BY OXIDATION OF AMMONIA WITH HYPOCHLORITE THE STEPS OF PREPARING AN AQUEOUS SOLUTION OF CHLORAMINE FREE FROM HYPOCHLORITE AND HAVING A TEMPERATURE OF 0*-20* C., SPRAYING THE CHLORAMINE SOLUTION INTO A REACTION ZONE CONTAINING A STOICHIOMETRIC EXCESS OF HOT AMMONIA GAS NOT SUBSTANTIALLY OVER 650* C. IN TEMPERATURE, SAID AMMONIA GAS CONTAINING SUFFICIENT SENSIBLE HEAT TO RAISE THE TEMPERATURE OF THE SPRAYED SOLUTION TO THE APPROXIMATE RANGE OF 60*-140* C. RAPIDLY TO FAVOR THE HYDRAZINE SYNTHESIS REACTION, SEPARATING THE RE-
Claim 2
Dependent Claim
85 words
IN THE MANUFACTURE OF HYDRAZINE BY OXIDATION OF AMMONIA WITH HYPOCHLORITE THE STEPS OF PREPARING AN AQUEOUS SOLUTION OF CHLORAMINE FREE FROM HYPOCHLORITE AND HAVING A TEMPERATURE OF 0*-20* C., SPRAYING THE CHLORAMINE SOLUTION INTO A REACTION ZONE CONTAINING A STOICHIOMETRIC EXCESS OF HOT AMMONIA GAS NOT SUBSTANTIALLY OVER 650* C. IN TEMPERATURE, SAID AMMONIA GAS CONTAINING SUFFICIENT SENSIBLE HEAT TO RAISE THE TEMPERATURE OF THE SPRAYED SOLUTION TO THE APPROXIMATE RANGE OF 60*-140* C. RAPIDLY TO FAVOR THE HYDRAZINE SYNTHESIS REACTION, SEPARATING THE RE-
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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |