US2965664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing neutral phosphorus- and sulfur-containing compositions
Assignee: Lubrizol Corp
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Filing: 1956-04-09
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Granted: 1960-12-20
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:14
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/06; C07F9/16; C07F9/165; C07F9/1651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS OF PREPARING SUBSTANTIALLY NEUTRAL PHOSPHOROUS- AND SULFUR-CONTAINING COMPOSITIONS WHICH COMPRISES BUBBLING AN INERT GAS THROUGH A REACTION MIXTURE, DURING THE PERIOD OF REACTION, OF A PHOSPHORUS THIOIC ACID SELECTED FROM THE CLASS CONSISTING OF PHOSPHORODITHIOIC ACIDS AND PHOSPHINODITHIOIC ACIDS IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALKYL, ARYL, ARYLALKYL, ALKARYL, ALKENYL AND CYCLOALKENYL RADICALS, AND A LOWER ALIPHATIC OXIDE.
Claim 2
Dependent Claim
67 words
THE PROCESS OF PREPARING SUBSTANTIALLY NEUTRAL PHOSPHOROUS- AND SULFUR-CONTAINING COMPOSITIONS WHICH COMPRISES BUBBLING AN INERT GAS THROUGH A REACTION MIXTURE, DURING THE PERIOD OF REACTION, OF A PHOSPHORUS THIOIC ACID SELECTED FROM THE CLASS CONSISTING OF PHOSPHORODITHIOIC ACIDS AND PHOSPHINODITHIOIC ACIDS IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALKYL, ARYL, ARYLALKYL, ALKARYL, ALKENYL AND CYCLOALKENYL RADICALS, AND A LOWER ALIPHATIC OXIDE.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |