Patent US3050468A successfully refreshed from Google Patents.
US3050468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of run-off in bituminous emulsions
Assignee: California Research LLC
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Filing: 1959-05-13
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Granted: 1962-08-21
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Expires: 1979-05-13
Abstract
No abstract record available.
Inventors
- 👤 James R Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN THE PREPARATION OF OIL-IN-WATER TYPE CATIONIC ASPHALT EMULSIONS, AN IMPROVED METHOD WHICH COMPRISES EMULSIFYING ASPHALT IN WATER WITH THE AID OF A CATIONIC EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF AMINE SALTS AND QUATERNARY AMMONIUM SALTS IN AN AMOUNT SUFFICIENT TO EFFECT FORMATION OF A STABLE OIL-IN-WATER TYPE ASPHALT EMULSION, CHARACTERIZED BY AN ASPHALT CONTENT OF FROM ABOUT 55 TO ABOUT 70% BY WEIGHT BASED ON THE WEIGHT OF THE EMULSION; INTRODUCING INTO THIS EMULSION AN AMOUNT EQUAL TO FROM ABOUT 0.1 TO ABOUT 1.0% BY WEIGHT OF A QUARTERNARY NITROGEN HALIDE SALT SELECTED FROM THE GROUP CONSISTING OF BROMIDES AND CHLORIDES; AND THOROUGHLY DISTRIBUTING THIS SALT IN THE EMULSION TO DISSOLVE IT COMPLETELY IN THE EMULSION MAINTAIN AT A TEMPERATURE NOT EXCEEDING ABOUT 150* F.
Claim 2
Dependent Claim
128 words
IN THE PREPARATION OF OIL-IN-WATER TYPE CATIONIC ASPHALT EMULSIONS, AN IMPROVED METHOD WHICH COMPRISES EMULSIFYING ASPHALT IN WATER WITH THE AID OF A CATIONIC EMULSIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF AMINE SALTS AND QUATERNARY AMMONIUM SALTS IN AN AMOUNT SUFFICIENT TO EFFECT FORMATION OF A STABLE OIL-IN-WATER TYPE ASPHALT EMULSION, CHARACTERIZED BY AN ASPHALT CONTENT OF FROM ABOUT 55 TO ABOUT 70% BY WEIGHT BASED ON THE WEIGHT OF THE EMULSION; INTRODUCING INTO THIS EMULSION AN AMOUNT EQUAL TO FROM ABOUT 0.1 TO ABOUT 1.0% BY WEIGHT OF A QUARTERNARY NITROGEN HALIDE SALT SELECTED FROM THE GROUP CONSISTING OF BROMIDES AND CHLORIDES; AND THOROUGHLY DISTRIBUTING THIS SALT IN THE EMULSION TO DISSOLVE IT COMPLETELY IN THE EMULSION MAINTAIN AT A TEMPERATURE NOT EXCEEDING ABOUT 150* F.
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |