US2504121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of alkyl diaryl esters of ortho phosphoric acid
Assignee: Monsanto Chemicals Ltd
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Filing: 1949-02-07
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Granted: 1950-04-18
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Expires: 1969-02-07
Abstract
No abstract record available.
Inventors
- 👤 Harry R Gamrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:39
CPC Classifications
G; G04; G04B; G04B31/00; G04B31/08; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C10; C10M; C10M1/00; C10M1/08; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2040/00; C10N2040/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
THE PROCESS FOR THE PREPARATION OF MONOALKYL DIARYL PHOSPHATE ESTERS OF THE TYPE
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) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |