Patent US3318982A successfully refreshed from Google Patents.
US3318982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of mixtures of acid orthophosphoric acid esters
Assignee: Knapsack AG
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Filing: 1964-12-09
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Granted: 1967-05-09
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Expires: 1984-12-09
Abstract
No abstract record available.
Inventors
- 👤 Klose Werner
- 👤 Harnisch Heinz
- 👤 Cremer Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR PRODUCING ACID ORTHOPHOSPHORIC ACID ESTERS FROM PHOSPHORUS PENTOXIDE AND ORGANIC HYDROXYLCONTAINING COMPOUNDS, COMPRISING ADMIXING PHOSPHORUS PENTOXIDE WITH A FEED MIXTURE OF ORTHOPHOSPHORIC ACID MONOESTERS AND ORTHOPHOSPHORIC ACID DIESTERS OF THE GENERAL FORMULAE
Claim 2
Dependent Claim
35 words
A PROCESS FOR PRODUCING ACID ORTHOPHOSPHORIC ACID ESTERS FROM PHOSPHORUS PENTOXIDE AND ORGANIC HYDROXYLCONTAINING COMPOUNDS, COMPRISING ADMIXING PHOSPHORUS PENTOXIDE WITH A FEED MIXTURE OF ORTHOPHOSPHORIC ACID MONOESTERS AND ORTHOPHOSPHORIC ACID DIESTERS OF THE GENERAL FORMULAE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |