Patent US3094549A successfully refreshed from Google Patents.
US3094549A
Expired / Lapsed
US
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Process for preparing hydroxyalkyl phosphates
Assignee: Dow Chemical Co
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Filing: 1961-07-27
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Granted: 1963-06-18
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Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Gurgiolo
- 👤 Robert A Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:16
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
IN THE PROCESS OF PRODUCING PHOSPHATE ESTERS BY THE CONDENSATION OF PHOSPHORIC ACID WITH AN ALKYLENE OXIDE, THE IMPROVEMENT OF CONDUCTING SAID CONDENSATION IN AN INERT ORGANIC SOLVENT.
Claim 2
Dependent Claim
28 words
IN THE PROCESS OF PRODUCING PHOSPHATE ESTERS BY THE CONDENSATION OF PHOSPHORIC ACID WITH AN ALKYLENE OXIDE, THE IMPROVEMENT OF CONDUCTING SAID CONDENSATION IN AN INERT ORGANIC SOLVENT.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |