Patent US3089842A successfully refreshed from Google Patents.
US3089842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sulfonated asphalt
Assignee: Phillips Petroleum Co
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Filing: 1959-12-14
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Granted: 1963-05-14
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Expires: 1979-12-14
Abstract
No abstract record available.
Inventors
- 👤 Charles A Stratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:07
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR MAKING SULFONATED ASPHALT, COMPRISING DISPERSING ASPHALTIC MATERIAL IN A NORMALLY LIQUID, INERT, LOW-BOILING PARAFFINIC HYDROCARBON DILUENT HAVING FROM 5 TO 8 CARBON ATOMS PER MOLECULE, CONTACTING THE RESULTING DISPERSION OF ASPHALITIC MATERIAL WITH A SULFONATING AGENT CONSISTING ESSENTIALLY OF LIQUID SULFUR TRIOXIDE UNDER ANHYDROOUS CONDITIONS, NEUTRALIZING THE RESULTING SULFONIC ACIDS WITH A BASIC NEUTRALIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND ALKALI METAL AND ALKALINE EARTH METAL SALTS, OXIDES, AND HYDROXIDES, SEPARATING SAID DILUENT FROM THE RESULTING NEUTRALIZED SULFONIC ACIDS, AND DRYING THE RESULTING SEPARATED SULFONATED ASPHALT AS THE PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
98 words
A PROCESS FOR MAKING SULFONATED ASPHALT, COMPRISING DISPERSING ASPHALTIC MATERIAL IN A NORMALLY LIQUID, INERT, LOW-BOILING PARAFFINIC HYDROCARBON DILUENT HAVING FROM 5 TO 8 CARBON ATOMS PER MOLECULE, CONTACTING THE RESULTING DISPERSION OF ASPHALITIC MATERIAL WITH A SULFONATING AGENT CONSISTING ESSENTIALLY OF LIQUID SULFUR TRIOXIDE UNDER ANHYDROOUS CONDITIONS, NEUTRALIZING THE RESULTING SULFONIC ACIDS WITH A BASIC NEUTRALIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND ALKALI METAL AND ALKALINE EARTH METAL SALTS, OXIDES, AND HYDROXIDES, SEPARATING SAID DILUENT FROM THE RESULTING NEUTRALIZED SULFONIC ACIDS, AND DRYING THE RESULTING SEPARATED SULFONATED ASPHALT AS THE PRODUCT OF THE PROCESS.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |