Patent US2976309A successfully refreshed from Google Patents.
US2976309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of thiolphosphoric acid esters
Assignee: Bayer AG
•
Filing: 1956-10-29
•
Granted: 1961-03-21
•
Expires: 1976-10-29
Abstract
No abstract record available.
Inventors
- 👤 Schrader Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:39
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1653; C07F9/1651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS FOR THE PRODUCTION OF O,O,S-TRIALKYLTHIOPHOSPHORIC ACID WHICH COMPRISES REACTING, IN A SUBSTANTIALLY AQUEOUS NUETRAL MEDIUM, AN ALKALI GROUP SALT OF O,O-DIALKYLTHIOPHOSPHORIC ACIDS WITH AN ALKYL HALIDE OF THE GENERAL FORMULA;
Claim 2
Dependent Claim
32 words
A PROCESS FOR THE PRODUCTION OF O,O,S-TRIALKYLTHIOPHOSPHORIC ACID WHICH COMPRISES REACTING, IN A SUBSTANTIALLY AQUEOUS NUETRAL MEDIUM, AN ALKALI GROUP SALT OF O,O-DIALKYLTHIOPHOSPHORIC ACIDS WITH AN ALKYL HALIDE OF THE GENERAL FORMULA;
References Cited (Backward Citations)
US2266514A
Cited
US2597534A
Cited
US2640847A
Cited
US2692891A
Cited
US2759010A
Cited
US2815312A
Cited
US2862017A
Cited
US2815350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |