US2711403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of aromatic olefinic phosphinic acids
Assignee: Shell Development Co
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Filing: 1952-11-24
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Granted: 1955-06-21
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Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Alan R Stiles
- 👤 Harman Denham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:08
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/3258; C07F9/327; C07F9/3205; C07F9/3217; C07F9/3229; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
A COMPOUND HAVING THE STRUCTURE REPRESENTED BY THE FORMULA
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) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |