Patent US3315441A successfully refreshed from Google Patents.
US3315441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating ammonia from methyl chloride
Assignee: EIDP Inc
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Filing: 1965-07-15
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Granted: 1967-04-25
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Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 David G Hutton
- 👤 William S Murray
- 👤 Jerome A Benning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:34
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS FOR SEPARATING AMMONIA FROM MIXTURES THEREOF WITH METHYL CHLORIDE WHICH COMPRISES (A) CONTACTING FROM ABOUT 50 TO ABOUT 1,000 VAPOR VOLUMES OF A GASEOUS MIXTURE CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF METHY CHLORIDE AND A MINOR PROPORTION OF AMMONIA (B) WITH ABOUT 1 LIQUID VOLUME OF A BRINE WHICH CONSISTS ESSENTIALLY OF A LIQUID SOLUTION IN WATER OF FROM ABOUT 35% TO ABOUT 45% BY WEIGHT OF LITHIUM CHLORIDE TO ABSORB THE AMMONIA IN THE BRINE (C) AT A TEMPERATURE OF FROM ABOUT -15*C. TO ABOUT '' +30*C. (D) AND AT A PRESSURE OF FROM ABOUT 1 TO ABOUT 5 ATMOSPHERES, AND (E) SEPARATING THE GASEOUS METHYL CHLORIDE FROM THE LIQUID BRINE.
Claim 2
Dependent Claim
115 words
THE PROCESS FOR SEPARATING AMMONIA FROM MIXTURES THEREOF WITH METHYL CHLORIDE WHICH COMPRISES (A) CONTACTING FROM ABOUT 50 TO ABOUT 1,000 VAPOR VOLUMES OF A GASEOUS MIXTURE CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF METHY CHLORIDE AND A MINOR PROPORTION OF AMMONIA (B) WITH ABOUT 1 LIQUID VOLUME OF A BRINE WHICH CONSISTS ESSENTIALLY OF A LIQUID SOLUTION IN WATER OF FROM ABOUT 35% TO ABOUT 45% BY WEIGHT OF LITHIUM CHLORIDE TO ABSORB THE AMMONIA IN THE BRINE (C) AT A TEMPERATURE OF FROM ABOUT -15*C. TO ABOUT '' +30*C. (D) AND AT A PRESSURE OF FROM ABOUT 1 TO ABOUT 5 ATMOSPHERES, AND (E) SEPARATING THE GASEOUS METHYL CHLORIDE FROM THE LIQUID BRINE.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |