US2542370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of thiophosphites
Assignee: Gulf Research and Development Co
•
Filing: 1948-09-16
•
Granted: 1951-02-20
•
Expires: 1968-09-16
Abstract
No abstract record available.
Inventors
- 👤 Donald R Stevens
- 👤 Roderick S Spindt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:33
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS OF PRODUCING AN ORGANIC THIOPOSPHITE COMPOUND WHICH COMPRISES REACTING ELEMENTAL PHOSPHORUS WITH AN ORGANIC COMPOUND CONTAINING AN -S-S- LINKAGE IN THE SUBSTANTIAL ABSENCE OF OTHER ORGANIC COMPOUND REACTIVE WITH PHOSPHORUS AT AN ELEVATED TEMPERATURE ABOVE THE TEMPERATURE OF SIMPLE SOLUTION OF SAID PHORPHORUS IN SAID ORGANIC COMPOUND AND BELOW THE DECOMPOSITION TEMPERATURE OF SAID ORGANIC THIOPHOSPHITE COMPOUND AND RECOVERING SAID ORGANIC THIOPHOSPHITE COMPOUND.
Claim 2
Dependent Claim
65 words
A PROCESS OF PRODUCING AN ORGANIC THIOPOSPHITE COMPOUND WHICH COMPRISES REACTING ELEMENTAL PHOSPHORUS WITH AN ORGANIC COMPOUND CONTAINING AN -S-S- LINKAGE IN THE SUBSTANTIAL ABSENCE OF OTHER ORGANIC COMPOUND REACTIVE WITH PHOSPHORUS AT AN ELEVATED TEMPERATURE ABOVE THE TEMPERATURE OF SIMPLE SOLUTION OF SAID PHORPHORUS IN SAID ORGANIC COMPOUND AND BELOW THE DECOMPOSITION TEMPERATURE OF SAID ORGANIC THIOPHOSPHITE COMPOUND AND RECOVERING SAID ORGANIC THIOPHOSPHITE COMPOUND.
References Cited (Backward Citations)
US1593232A
Cited
US1772386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |