US2639651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux oil and method of revivifying asphalt roads therewith
Assignee: Union Oil Company of California
•
Filing: 1946-04-19
•
Granted: 1953-05-26
•
Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:03
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/187
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD FOR REVIVIFING DETERIORATED ASPHALT ROADS WHICH COMPRISES BREAKING UP THE SURFACE OF THE DETERIORATED ROAD TO FORM LUMPS; APPLYING TO SAID LUMPS WITHOUT REMOVAL FROM THE ROAD BED A COATING OF A HIGHLY AROMATIC PETROLEUM EXTRACT OIL HAVING A VISCOSITY BETWEEN ABOUT 70 AND ABOUT 8000 SSU AT 100* F., AND VISCOSITY-GRAVITY CONSTANT GREATER THAN ABOUT 0.90, AND A FLASH POINT ABOVE ABOUT 300* F., AND CONSISTING ESSENTIALLY OF AROMATIC-TYPE HYDROCARBONS SUBSTANTIALLY FREE FROM ASPHATENES, OLEFINES, AND CRACKED HYDROCARBONS, SAID EXTRACT HAVING BEEN PREPARED BY A PROCESS INVOLVING CONTACTING A STRAIGHT RUN FRACTION FROM AN AROMATIC HYDROCARBON-CONTAINING CRUDE PETROLEUM WITH A LIQUID SOLVENT SELECTIVE IN ITS ACTION TOWARD AROMATIC HYDROCARBONS SO AS TO PHYSICALLY DISSOLVE THEREIN THE DESIRED AROMATIC HYDROCARBONS WITHOUT DISSOLVING THE UNDESIRED NON-AROMATIC HYDROCARBONS; ALLOWING THE COATED LUMPS TO STAND FOR AT LEAST ONE HOUR; AND THEREAFTER AMALGAMATING THE COATED LUMPS BY THE APPLICATION OF PRESSURE.
Claim 2
Independent Claim
150 words
A METHOD FOR REVIVIFING DETERIORATED ASPHALT ROADS WHICH COMPRISES BREAKING UP THE SURFACE OF THE DETERIORATED ROAD TO FORM LUMPS; APPLYING TO SAID LUMPS WITHOUT REMOVAL FROM THE ROAD BED A COATING OF A HIGHLY AROMATIC PETROLEUM EXTRACT OIL HAVING A VISCOSITY BETWEEN ABOUT 70 AND ABOUT 8000 SSU AT 100* F., AND VISCOSITY-GRAVITY CONSTANT GREATER THAN ABOUT 0.90, AND A FLASH POINT ABOVE ABOUT 300* F., AND CONSISTING ESSENTIALLY OF AROMATIC-TYPE HYDROCARBONS SUBSTANTIALLY FREE FROM ASPHATENES, OLEFINES, AND CRACKED HYDROCARBONS, SAID EXTRACT HAVING BEEN PREPARED BY A PROCESS INVOLVING CONTACTING A STRAIGHT RUN FRACTION FROM AN AROMATIC HYDROCARBON-CONTAINING CRUDE PETROLEUM WITH A LIQUID SOLVENT SELECTIVE IN ITS ACTION TOWARD AROMATIC HYDROCARBONS SO AS TO PHYSICALLY DISSOLVE THEREIN THE DESIRED AROMATIC HYDROCARBONS WITHOUT DISSOLVING THE UNDESIRED NON-AROMATIC HYDROCARBONS; ALLOWING THE COATED LUMPS TO STAND FOR AT LEAST ONE HOUR; AND THEREAFTER AMALGAMATING THE COATED LUMPS BY THE APPLICATION OF PRESSURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |