US2674616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phosphoruscontaining amine salts
Assignee: Shell Development Co
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Filing: 1951-08-18
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Granted: 1954-04-06
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Expires: 1971-08-18
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF PREPARING A NEUTRAL AMINE SALT OF AN ACID OF PENTAVALENT PHOSPHORUS WHICH COMPRISES HEATING TOGETHER AT A TEMPERATURE OF FROM ABOUT 50* C TO ABOUT 250* C. A MONOAMINE HYDROHALOGENIDE WITH A NEUTRAL ESTER OF SAID ACID TO DISPLACE AT LEAST ONE ESTERIFYING RADICAL OF SAID ESTER BY THE AMMONIUM GROUP OF THE MONOAMINE HYDROHALOGENIDE AND TO SIMULTANEOUSLY LIBERATE ORGANIC HALIDE CONTAINING IN COMBINATION SAID DISPLACED ESTERIFYING RADICAL AND HALOGEN OF THE MONOAMINE HYDROHALOGENIDE.
Claim 2
Independent Claim
77 words
THE METHOD OF PREPARING A NEUTRAL AMINE SALT OF AN ACID OF PENTAVALENT PHOSPHORUS WHICH COMPRISES HEATING TOGETHER AT A TEMPERATURE OF FROM ABOUT 50* C TO ABOUT 250* C. A MONOAMINE HYDROHALOGENIDE WITH A NEUTRAL ESTER OF SAID ACID TO DISPLACE AT LEAST ONE ESTERIFYING RADICAL OF SAID ESTER BY THE AMMONIUM GROUP OF THE MONOAMINE HYDROHALOGENIDE AND TO SIMULTANEOUSLY LIBERATE ORGANIC HALIDE CONTAINING IN COMBINATION SAID DISPLACED ESTERIFYING RADICAL AND HALOGEN OF THE MONOAMINE HYDROHALOGENIDE.
References Cited (Backward Citations)
US2347633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |