Patent US3367935A successfully refreshed from Google Patents.
US3367935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of phosphoric acid esters
Assignee: Novartis Corp
•
Filing: 1965-10-14
•
Granted: 1968-02-06
•
Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 Robert P Curry
- 👤 Carlton G Craddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:26
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-DIALKYL-OARYL PHOSPHATES AND THIOPHOSPHATES WHICH COMPRISES REACTING A DIALKYL PHOSPHORIC ACID OF THE FORMULA
Claim 2
Dependent Claim
21 words
IN A PROCESS FOR THE PRODUCTION OF O,O-DIALKYL-OARYL PHOSPHATES AND THIOPHOSPHATES WHICH COMPRISES REACTING A DIALKYL PHOSPHORIC ACID OF THE FORMULA
References Cited (Backward Citations)
US3107245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |