US2744128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefinically unsaturated phosphates
Assignee: Shell Development Co
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Filing: 1952-02-29
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Granted: 1956-05-01
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Expires: 1972-02-29
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65742; A; A01; A01N; A01N57/00; A01N57/36; C07F9/657109; C07F9/657118; C07F9/6578
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AN ESTER OF AN ALPHA, BETA-OLEFINICALLY UNSATURATED ALCOHOL AND A MEMBER OF THE GROUP CONSISTING OF THE 2HYDROXY-2-OXO-1,3,2-DIOXAPHOSPHOLANES, 2 - HYDROXY - 2 OXO-1,3,2-DIOXAPHOSPHORINANES, AND THE 2-THIONO ANALOGUES OF THESE COMPOUNDS, ONE OF THE CARBON ATOMS, INVOLVED IN THE OLEFINIC LINKAGE OF THE SAID ALPHA, BETA-OLEFINICALLY UNSATURATED ALCOHOL BEING ATTACHED DIRECTLY TO THE ESTER OXYGEN ATOM.
Claim 2
Dependent Claim
56 words
AN ESTER OF AN ALPHA, BETA-OLEFINICALLY UNSATURATED ALCOHOL AND A MEMBER OF THE GROUP CONSISTING OF THE 2HYDROXY-2-OXO-1,3,2-DIOXAPHOSPHOLANES, 2 - HYDROXY - 2 OXO-1,3,2-DIOXAPHOSPHORINANES, AND THE 2-THIONO ANALOGUES OF THESE COMPOUNDS, ONE OF THE CARBON ATOMS, INVOLVED IN THE OLEFINIC LINKAGE OF THE SAID ALPHA, BETA-OLEFINICALLY UNSATURATED ALCOHOL BEING ATTACHED DIRECTLY TO THE ESTER OXYGEN ATOM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |