US2945818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing surface active compositions
Assignee: Atlas Powder Co
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Filing: 1955-02-01
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Granted: 1960-07-19
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Expires: 1975-02-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Costine
- 👤 Robert W Behrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:31
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE PROCESS OF PREPARING A SALT OF AN ORGINAC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALKYLARYL SULFONIC ACID CONTAINING FROM 8 TO 18 CARBON ATOMS IN THE ALKYL RADICAL AND A SULFATED HYDROXY COMPOUND CONTAINING AT LEAST ONE HYDROCARBON CHAIN HAVING FROM 8 TO 18 CARBON ATOMS WHICH COMPRISES ADDING TO A HYDROCARBON SOLVENT SOLUTION OF SAID ORGANIC COMPOUND CONTAINING SULPHURIC ACID AND AQUEOUS SLURRY OF AN INORGANIC BASE AND A SYNTHETIC NON-IONIC SURFACE ACTIVE AGENT IN AN AMOUNT SUFFICIENT TO PROVIDE A WEIGHT RATIO OF SAID SURFACE ACTIVE AGENT TO SAID ORGANIC COMPOUND BETWEEN ABOUT 40/60 TO ABOUT 75/25 WHEREBY A COMPOSITION COMPOSED OF AN INORGANIC COMPOUND AND A HOMOGENEOUS REACTION MIXTURE OF SOLVENT, SURFACE ACTIVE AGENT AND SALT OF AN ORGANIC COMPOUND IS PRODUCED, AND FILTERING PRECIPITATED INORGANIC SULFATE FROM SAID REACTION MIXTURE
Claim 2
Dependent Claim
137 words
THE PROCESS OF PREPARING A SALT OF AN ORGINAC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALKYLARYL SULFONIC ACID CONTAINING FROM 8 TO 18 CARBON ATOMS IN THE ALKYL RADICAL AND A SULFATED HYDROXY COMPOUND CONTAINING AT LEAST ONE HYDROCARBON CHAIN HAVING FROM 8 TO 18 CARBON ATOMS WHICH COMPRISES ADDING TO A HYDROCARBON SOLVENT SOLUTION OF SAID ORGANIC COMPOUND CONTAINING SULPHURIC ACID AND AQUEOUS SLURRY OF AN INORGANIC BASE AND A SYNTHETIC NON-IONIC SURFACE ACTIVE AGENT IN AN AMOUNT SUFFICIENT TO PROVIDE A WEIGHT RATIO OF SAID SURFACE ACTIVE AGENT TO SAID ORGANIC COMPOUND BETWEEN ABOUT 40/60 TO ABOUT 75/25 WHEREBY A COMPOSITION COMPOSED OF AN INORGANIC COMPOUND AND A HOMOGENEOUS REACTION MIXTURE OF SOLVENT, SURFACE ACTIVE AGENT AND SALT OF AN ORGANIC COMPOUND IS PRODUCED, AND FILTERING PRECIPITATED INORGANIC SULFATE FROM SAID REACTION MIXTURE
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |