Patent US2683168A successfully refreshed from Google Patents.
US2683168A
Expired / Lapsed
US
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Preparation of organo phosphonyl chlorides
Assignee: California Research LLC
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Filing: 1950-12-22
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Granted: 1954-07-06
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Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Jensen Warren
- 👤 James O Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:42
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD OF PRODUCING ORGANO PHOSPHONYL CHLORIDES WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING AT LEAST ONE ALIPHATIC CARBON ATOM, SAID ALIPHATIC CARBON ATOM BEING BONDED ONLY TO CARBON ATOMS AND HYDROGEN ATOMS, AT LEAST ONE OF EACH, WITH PHOSPHOROUS TRICHLORIDE IN INTIMATE CONTACT WITH OXYGEN, AT TEMPERATURES FROM ABOUT -70* C. TO ABOUT +75* C., SAID ORGANIC COMPOUND CONTAINING NOT LESS THAN THREE CARBON ATOMS AND BEING FREE OF SULFUR, SELENIUM AND NITROGEN.
Claim 2
Independent Claim
74 words
THE METHOD OF PRODUCING ORGANO PHOSPHONYL CHLORIDES WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING AT LEAST ONE ALIPHATIC CARBON ATOM, SAID ALIPHATIC CARBON ATOM BEING BONDED ONLY TO CARBON ATOMS AND HYDROGEN ATOMS, AT LEAST ONE OF EACH, WITH PHOSPHOROUS TRICHLORIDE IN INTIMATE CONTACT WITH OXYGEN, AT TEMPERATURES FROM ABOUT -70* C. TO ABOUT +75* C., SAID ORGANIC COMPOUND CONTAINING NOT LESS THAN THREE CARBON ATOMS AND BEING FREE OF SULFUR, SELENIUM AND NITROGEN.
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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |