Patent US3079311A successfully refreshed from Google Patents.
US3079311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing tertiary phosphines
Assignee: ChampionX LLC
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Filing: 1961-02-20
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Granted: 1963-02-26
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Expires: 1981-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr William P Hettinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:45
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/505
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR PREPARING TERTIARY PHOSPHINES WHICH COMPRISES ELECTROLYZING BETWEEN A PHOSPORUS ANODE AND A CATHODE A SUBSTANTIALLY ANHYDROUS SOLUTION OF A GRIGNARD REAGENT OF THE FORMULA RMGHALIDE IN A SUBSTANTIALLY INERT SOLVENT FOR THE GRIGNARD REAGENT, AND RECOVERING AS AN ELECTROLYSIS PRODUCT A TERTIARY PHOSPHINE OF THE FORMULA R3P WHERE R IS AN ORGANIC RADICAL CONTAINING AS ITS MAJOR COMPONENTS THE ELEMENTS. CARBON AND HYDROGEN.
Claim 2
Dependent Claim
66 words
A PROCESS FOR PREPARING TERTIARY PHOSPHINES WHICH COMPRISES ELECTROLYZING BETWEEN A PHOSPORUS ANODE AND A CATHODE A SUBSTANTIALLY ANHYDROUS SOLUTION OF A GRIGNARD REAGENT OF THE FORMULA RMGHALIDE IN A SUBSTANTIALLY INERT SOLVENT FOR THE GRIGNARD REAGENT, AND RECOVERING AS AN ELECTROLYSIS PRODUCT A TERTIARY PHOSPHINE OF THE FORMULA R3P WHERE R IS AN ORGANIC RADICAL CONTAINING AS ITS MAJOR COMPONENTS THE ELEMENTS. CARBON AND HYDROGEN.
References Cited (Backward Citations)
US2265819A
Cited
GB839172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |