US3107246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of phosphoric acid esters
Assignee: Novartis Corp
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Filing: 1962-07-05
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Granted: 1963-10-15
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 John F Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:11
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/645; C07F9/6509; C07F9/6512
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
IN A PROCESS FOR THE PRODUCTION OF O,O-D-ALKYL-O-ARYL PHOSPHATES AND THIOPHOSPHATES BY REACTING A DIALKYL PHOSPHORIC ACID HALIDE OF THE FORMULA:
Claim 2
Dependent Claim
21 words
IN A PROCESS FOR THE PRODUCTION OF O,O-D-ALKYL-O-ARYL PHOSPHATES AND THIOPHOSPHATES BY REACTING A DIALKYL PHOSPHORIC ACID HALIDE OF THE FORMULA:
References Cited (Backward Citations)
US2784207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |