Patent US2647140A successfully refreshed from Google Patents.
US2647140A
Expired / Lapsed
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Process for the production of dialkylthiophosphates
Assignee: Bayer AG
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Filing: 1950-12-27
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Granted: 1953-07-28
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Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jonas Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN A PROCESS OF PREPARING A DIALKYLTHIOPHOSPHATE THE STEP WHICH COMPRISES MIXING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS A DIALKYLPHOSPHITE WITH SULFUR AND A NITROGEN COMPOUND OF THE GROUP CONSISTING OF AMMONIA AND ORGANIC AMINES, AND RECOVERING A AMINE SALT OF A DIALKYLTHIOPHOSPHATE.
Claim 2
Dependent Claim
41 words
IN A PROCESS OF PREPARING A DIALKYLTHIOPHOSPHATE THE STEP WHICH COMPRISES MIXING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS A DIALKYLPHOSPHITE WITH SULFUR AND A NITROGEN COMPOUND OF THE GROUP CONSISTING OF AMMONIA AND ORGANIC AMINES, AND RECOVERING A AMINE SALT OF A DIALKYLTHIOPHOSPHATE.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |