US2716657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing orthophosphoric acid esters
Assignee: GEA Group AG
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Filing: 1950-10-17
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Granted: 1955-08-30
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Expires: 1970-10-17
Abstract
No abstract record available.
Inventors
- 👤 Brestschneider Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/043; C10N; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A METHOD FOR THE PRODUCTION OF ORTHOPHOSPHORIC ACID ESTERS WHICH COMPRISES REACTING ORGANIC HYDROXYL COMPOUNDS WITH PHOSPHORUS OXYCHLORIDE IN THE PRESENCE OF PHOSPHPORUS TRICHLORIDE.
Claim 2
Independent Claim
24 words
A METHOD FOR THE PRODUCTION OF ORTHOPHOSPHORIC ACID ESTERS WHICH COMPRISES REACTING ORGANIC HYDROXYL COMPOUNDS WITH PHOSPHORUS OXYCHLORIDE IN THE PRESENCE OF PHOSPHPORUS TRICHLORIDE.
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) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |