Patent US3434856A successfully refreshed from Google Patents.
US3434856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-stage process for making paving mixes
Assignee: Chevron USA Inc
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Filing: 1964-05-25
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Granted: 1969-03-25
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Alan A Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:49
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ASPHALT COMPOSITION SUITABLE FOR THE PREPARATION OF PAVING MXES OF EMULSIFIED ASPHALT AND MINERAL AGGREGATE, CONSISTING ESSENTIALLY OF (1) A PAVING EMULSION OF ASPHALT-IN-WATER, CHARACTERIZED BY AN ASPHALT CONTENT FROM ABOUT 50 TO ABOUT 70% BY WEIGHT, FROM ABOUT 0.15 TO ABOUT 3% BY WEIGHT EMULSIFIER AND A MINOR PROPORTION OF WATER; (2) FROM ABOUT 5 TO ABOUT 15% BY WEIGHT OF ASPHALTENES, AND (3) FROM ABOUT 10 TO ABOUT 30% BY WEIGHT OF A MIXTURE OF A LIGHT SOLVENT FOR SAID ASPHALTENES SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBON SOLVENTS AND CARBON TETRACHLORIDE AND A HEAVIER HYDROCARBON SOLVENT SELECTED FROM THE GROUP CONSISTING OF CUTTER STOCK NAPHTHA AND LIGHT CYCLE OIL, THE WEIGHT RATION OF SAID LIGHT SOLVENT TO SAID HEAVIER HYDROCARBON SOLVENT BEING IN THE RANGE FROM 40:60 TO 60:40.
Claim 2
Dependent Claim
134 words
AN ASPHALT COMPOSITION SUITABLE FOR THE PREPARATION OF PAVING MXES OF EMULSIFIED ASPHALT AND MINERAL AGGREGATE, CONSISTING ESSENTIALLY OF (1) A PAVING EMULSION OF ASPHALT-IN-WATER, CHARACTERIZED BY AN ASPHALT CONTENT FROM ABOUT 50 TO ABOUT 70% BY WEIGHT, FROM ABOUT 0.15 TO ABOUT 3% BY WEIGHT EMULSIFIER AND A MINOR PROPORTION OF WATER; (2) FROM ABOUT 5 TO ABOUT 15% BY WEIGHT OF ASPHALTENES, AND (3) FROM ABOUT 10 TO ABOUT 30% BY WEIGHT OF A MIXTURE OF A LIGHT SOLVENT FOR SAID ASPHALTENES SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBON SOLVENTS AND CARBON TETRACHLORIDE AND A HEAVIER HYDROCARBON SOLVENT SELECTED FROM THE GROUP CONSISTING OF CUTTER STOCK NAPHTHA AND LIGHT CYCLE OIL, THE WEIGHT RATION OF SAID LIGHT SOLVENT TO SAID HEAVIER HYDROCARBON SOLVENT BEING IN THE RANGE FROM 40:60 TO 60:40.
References Cited (Backward Citations)
US2349445A
Cited
US2366657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |