Patent US2656374A successfully refreshed from Google Patents.
US2656374A
Expired / Lapsed
US
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Process for the preparation of alkyl phenyl phosphoric acids and the salts thereof
Assignee: Monsanto Chemicals Ltd
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Filing: 1950-05-01
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Granted: 1953-10-20
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Expires: 1970-05-01
Abstract
No abstract record available.
Inventors
- 👤 Harry R Gamrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:10
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
IN A PROCESS FOR THE CONVERSION OF ALKYL PHOSPHORYL DICHLORIDES TO SALTS OF ALKYL PHENYL PHOSPHORIC ACID, SAID ACID HAVING THE FORMULA
Claim 2
Dependent Claim
22 words
IN A PROCESS FOR THE CONVERSION OF ALKYL PHOSPHORYL DICHLORIDES TO SALTS OF ALKYL PHENYL PHOSPHORIC ACID, SAID ACID HAVING 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) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |