US2862831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-breaking bituminous emulsions having increased adhesion to mineral aggregate
Assignee: California Research LLC
•
Filing: 1953-07-01
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Granted: 1958-12-02
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Edward W Mertens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:44
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A QUICK-BREAKIN, OIL-IN-WATER TYPE EMULSION HAVING IMPROVED BONDING CHARACTERISTICS TO HYDROPHILIC AGGREGATE, CONSISTING ESSENTIALLY OF BITUMINOUS MATERIAL EMULSIFIED THEREIN AND IN COMBINATION 0.02 TO 3.5% BY WEIGHT OF AN ALKALI METAL SALT OF AN ORGANO-SUBSTITUTED OXYPHOSPHOROUS ACID HAVING AT LEAST 8 CARBON ATOMS AND A WATER-SOLUBLE ALKALI IN SUFFICIENT AMOUNT TO GIVE THE AQUEOUS PHASE OF THE EMULSION AN ALKALINE PH IN THE RANGE 11.0-11.8, SAID AMOUNT BEING LESS THAN THAT WHICH, TOGETHER WITH THE PHOSPHOROUS SALT, REDUCES THE DEMULSIBILITY BELOW 55% AS MEASURED IN THE ASTM D244-42 (DEMULSIBILITY) TEST.
Claim 2
Dependent Claim
90 words
A QUICK-BREAKIN, OIL-IN-WATER TYPE EMULSION HAVING IMPROVED BONDING CHARACTERISTICS TO HYDROPHILIC AGGREGATE, CONSISTING ESSENTIALLY OF BITUMINOUS MATERIAL EMULSIFIED THEREIN AND IN COMBINATION 0.02 TO 3.5% BY WEIGHT OF AN ALKALI METAL SALT OF AN ORGANO-SUBSTITUTED OXYPHOSPHOROUS ACID HAVING AT LEAST 8 CARBON ATOMS AND A WATER-SOLUBLE ALKALI IN SUFFICIENT AMOUNT TO GIVE THE AQUEOUS PHASE OF THE EMULSION AN ALKALINE PH IN THE RANGE 11.0-11.8, SAID AMOUNT BEING LESS THAN THAT WHICH, TOGETHER WITH THE PHOSPHOROUS SALT, REDUCES THE DEMULSIBILITY BELOW 55% AS MEASURED IN THE ASTM D244-42 (DEMULSIBILITY) TEST.
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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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |