US2708153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydrazine hydrobromide
Assignee: Olin Corp
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Filing: 1953-12-30
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Granted: 1955-05-10
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Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 James N Felger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:02
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A TWO-STAGE CYCLIC PROCESS FOR THE MANUFACTURE OF HYDRAZINE HYDROBROMIDE WHICH COMPRISES ABSORBING AND REACTING BROMINE AND AMMONIA IN AN AQUEOUS SOLUTION OF AMMONIUM BROMIDE IN A TOWER TYPE CONTACT SYSTEM TO FORM AMMONIUM BROMIDE, REMOVING AN AQUEOUS AMMONIM BROMIDE SOLUTION FROM THE TOWER TYPE CONTACT SYSTEM TO A REACTION ZONE, REACTING THE AQUEOUS AMMONIUM BROMIDE SOLUTION WITH HYDRAZINE IN THE REACTION ZONE TO FORM HYDRAZINE HYDROBROMIDE AND AMMONIA, RECOVERING HYDRAZINE HYDROBROMIDE AND AMMONIA AND RETURNING AMMONIA TO THE ABSORBING AND REACTING STEP.
Claim 2
Dependent Claim
83 words
A TWO-STAGE CYCLIC PROCESS FOR THE MANUFACTURE OF HYDRAZINE HYDROBROMIDE WHICH COMPRISES ABSORBING AND REACTING BROMINE AND AMMONIA IN AN AQUEOUS SOLUTION OF AMMONIUM BROMIDE IN A TOWER TYPE CONTACT SYSTEM TO FORM AMMONIUM BROMIDE, REMOVING AN AQUEOUS AMMONIM BROMIDE SOLUTION FROM THE TOWER TYPE CONTACT SYSTEM TO A REACTION ZONE, REACTING THE AQUEOUS AMMONIUM BROMIDE SOLUTION WITH HYDRAZINE IN THE REACTION ZONE TO FORM HYDRAZINE HYDROBROMIDE AND AMMONIA, RECOVERING HYDRAZINE HYDROBROMIDE AND AMMONIA AND RETURNING AMMONIA TO THE ABSORBING AND REACTING STEP.
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) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |