US2724719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of thiono phosphates
Assignee: Ethyl Corp
•
Filing: 1953-11-16
•
Granted: 1955-11-22
•
Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Francis X Markley
- 👤 Melvin L Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:05
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR THE MANUFACTURE OF TRIS-(2-CHLOROPROPYL)-THIONOPHOSPHATE WHICH COMPRISES REACTING PROPYLENE OXIDE WITH THIOPHOSPHORYL CHLORIDE IN THE PRESENCE OF A CATALYTIC QUANTITY OF PHOSPHORUS TRICHLORIDE.
Claim 2
Dependent Claim
25 words
A PROCESS FOR THE MANUFACTURE OF TRIS-(2-CHLOROPROPYL)-THIONOPHOSPHATE WHICH COMPRISES REACTING PROPYLENE OXIDE WITH THIOPHOSPHORYL CHLORIDE IN THE PRESENCE OF A CATALYTIC QUANTITY OF PHOSPHORUS TRICHLORIDE.
References Cited (Backward Citations)
US2536647A
Cited
US2610978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |