US2773860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of stabilizing phosphorus sulfide-oxygen-containing organic compound reaction products against liberation of hydrogen sulfide
Assignee: Standard Oil Co
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Filing: 1955-12-30
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Granted: 1956-12-11
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 John M Musselman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:48
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS OF STABILIZING PHOSPHORUS SULFIDE-OXYGENCONTAINING ORGANIC COMPOUND ADDITIVES AGAINST GENERATION OF HYDROGEN SULFIDE WHICH COMPRISES TREATING THE ADDITIVE SEPARATELY WITH AT LEAST 0.1% UP TO ABOUT 1% PO TASSIUM HYDROXIDE AND WITH AT LEAST ABOUT 0.5% UP TO ABOUT 5% SULFUR DIOXIDE AT A TEMPERATURE OF AT LEAST ABOUT 150* F. BUT BELOW A TEMPERATURE AT WHICH THE ADDITIVE WOULD BE DECOMPOSED, AND UNDER CONDITIONS OF PRESSURE AND TIME TO EFFECT CHEMICAL REACTION BETWEEN THE POTASSIUM HYDROXIDE AND THE SULFUR DIOXIDE AND HYDROGEN SULFIDE-PRODUCING COMPONENTS OF THE ADDITIVE AND PRODUCE AN ADDITIVE WHICH HAS A SULFUR CONTENT LESS THAN ABOUT 1.5% HIGHER THAN THAT OF THE STARTING ADDITIVE AND WHICH MEETS THE REQUIREMENTS OF THE HYDROGEN SULFIDE STABILITY TEST.
Claim 2
Dependent Claim
120 words
A PROCESS OF STABILIZING PHOSPHORUS SULFIDE-OXYGENCONTAINING ORGANIC COMPOUND ADDITIVES AGAINST GENERATION OF HYDROGEN SULFIDE WHICH COMPRISES TREATING THE ADDITIVE SEPARATELY WITH AT LEAST 0.1% UP TO ABOUT 1% PO TASSIUM HYDROXIDE AND WITH AT LEAST ABOUT 0.5% UP TO ABOUT 5% SULFUR DIOXIDE AT A TEMPERATURE OF AT LEAST ABOUT 150* F. BUT BELOW A TEMPERATURE AT WHICH THE ADDITIVE WOULD BE DECOMPOSED, AND UNDER CONDITIONS OF PRESSURE AND TIME TO EFFECT CHEMICAL REACTION BETWEEN THE POTASSIUM HYDROXIDE AND THE SULFUR DIOXIDE AND HYDROGEN SULFIDE-PRODUCING COMPONENTS OF THE ADDITIVE AND PRODUCE AN ADDITIVE WHICH HAS A SULFUR CONTENT LESS THAN ABOUT 1.5% HIGHER THAN THAT OF THE STARTING ADDITIVE AND WHICH MEETS THE REQUIREMENTS OF THE HYDROGEN SULFIDE STABILITY TEST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |