US3006860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt emulsions
Assignee: Shell USA Inc
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Filing: 1959-06-25
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Granted: 1961-10-31
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Expires: 1979-06-25
Abstract
No abstract record available.
Inventors
- 👤 Watler E Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:55
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN OIL-IN-WATER ASHALT EMULSION HAVING ABOUT 50-70 PERCENT BY WEIGHT OF ASPHALT AND AN EMULSIFYING PROPORTION OF WATER DISPERSABLE ALKALI METAL SOAP OF HIGHER FATTY ACIDS, THE ASPHALT PHASE BEING A PAVING GRADE ASPHALT, THE AQUEOUS PHASE HAVING A PH BETWEEN 10.0 AND 11.2 AND CONSISTING ESSENTIALLY OF WATER, AN EMULSION VISCOSITY INCREASING COMBINATION OF A WATER-SWELLABLE CLAY HAVING A BASE EXCHANGE CAPACITY OF ABOUT 15-100 MILLIEQUIVALENTS EXCHANGEABLE BASE PER 100 GRAMS OF CLAY AND A WATERDISPERSIBLE CELLULOSE DERIVATIVE OF THE GROUP CONSISTING OF ALKALI METAL SALTS OF CARBOXYMETHYL CELLULOSE, METHYL CELLULOSE, HYDROXY ETHYL CELLULOSE AND MIXTURES THEREOF, THE WEIGHT PROPORTION OF CLAY TO CELLULOSE DERIVATIVE BEING BETWEEN ABOUT 6:1 AND ABOUT 2:1, THE MAXIMUM AMOUNT OF ASH-FORMING COMPONENTS BEING 2% BY WEIGHT BASED ON THE ASPHALT.
Claim 2
Dependent Claim
127 words
AN OIL-IN-WATER ASHALT EMULSION HAVING ABOUT 50-70 PERCENT BY WEIGHT OF ASPHALT AND AN EMULSIFYING PROPORTION OF WATER DISPERSABLE ALKALI METAL SOAP OF HIGHER FATTY ACIDS, THE ASPHALT PHASE BEING A PAVING GRADE ASPHALT, THE AQUEOUS PHASE HAVING A PH BETWEEN 10.0 AND 11.2 AND CONSISTING ESSENTIALLY OF WATER, AN EMULSION VISCOSITY INCREASING COMBINATION OF A WATER-SWELLABLE CLAY HAVING A BASE EXCHANGE CAPACITY OF ABOUT 15-100 MILLIEQUIVALENTS EXCHANGEABLE BASE PER 100 GRAMS OF CLAY AND A WATERDISPERSIBLE CELLULOSE DERIVATIVE OF THE GROUP CONSISTING OF ALKALI METAL SALTS OF CARBOXYMETHYL CELLULOSE, METHYL CELLULOSE, HYDROXY ETHYL CELLULOSE AND MIXTURES THEREOF, THE WEIGHT PROPORTION OF CLAY TO CELLULOSE DERIVATIVE BEING BETWEEN ABOUT 6:1 AND ABOUT 2:1, THE MAXIMUM AMOUNT OF ASH-FORMING COMPONENTS BEING 2% BY WEIGHT BASED ON THE ASPHALT.
References Cited (Backward Citations)
US2733159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |