US3197413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for atomizing asphalt
Assignee: California Research LLC
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Filing: 1961-07-25
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Granted: 1965-07-27
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Wingerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/14; C10C3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PROCESS FOR THE PREPARATION OF AQUEOUS SUSPENSIONS OF ATOMIZED ASPHALT SUITABLE FOR DIRECT USE IN THE MANUFACTURE OF STRUCTURAL BOARD, SAID PROCESS COMPRISING: HEATING TO A TEMPERATURE IN THE RANGE OF 425-550*F. A HARD ASPHALT CHARACTERIZED BY BEING FREE FROM OFFENSIVE ODOR AND SMOKE AND KHAVING A FLASH POINT BELOW ABOUT 500*F. (CLEVELAND OPEN CUP), A PENETRATION NOT EXCEEDING 16 AT 130*F., AS MEASURED WITH A 100-GRAM LOAD IN 5 SECONDS, AND A VISCOSITY NOT EXCEEDING 400 CENTISTOKES AT 450*F.; SPRAYING THE MELTED ASPHALT THROUGH AN ATOMIZING DEVICE AT A TEMPERATURE BETWEEN ABOUT 425 AND 550*F. AND UNDER A PRESSURE ABOVE ABOUT 50 P.S.I.G. TO SUBDIVIDE SAID ASPHALT INTO PARTICLES PASSING SUBSTANTIALLY COMPLETELY AT LEAST 94% THROUGH A 40-MESH SIEVE; AND CHILLING THE ATOMIZED ASPHALT WITH A SHOWER OF WATER TO A TEMPERATURE LESS THAN ABOUT 140*F. TO FORM A LIQUID SUSPENSION OF NON-COALESCENT PARTICLES OF ASPHALT IN WATER.
Claim 2
Dependent Claim
150 words
A PROCESS FOR THE PREPARATION OF AQUEOUS SUSPENSIONS OF ATOMIZED ASPHALT SUITABLE FOR DIRECT USE IN THE MANUFACTURE OF STRUCTURAL BOARD, SAID PROCESS COMPRISING: HEATING TO A TEMPERATURE IN THE RANGE OF 425-550*F. A HARD ASPHALT CHARACTERIZED BY BEING FREE FROM OFFENSIVE ODOR AND SMOKE AND KHAVING A FLASH POINT BELOW ABOUT 500*F. (CLEVELAND OPEN CUP), A PENETRATION NOT EXCEEDING 16 AT 130*F., AS MEASURED WITH A 100-GRAM LOAD IN 5 SECONDS, AND A VISCOSITY NOT EXCEEDING 400 CENTISTOKES AT 450*F.; SPRAYING THE MELTED ASPHALT THROUGH AN ATOMIZING DEVICE AT A TEMPERATURE BETWEEN ABOUT 425 AND 550*F. AND UNDER A PRESSURE ABOVE ABOUT 50 P.S.I.G. TO SUBDIVIDE SAID ASPHALT INTO PARTICLES PASSING SUBSTANTIALLY COMPLETELY AT LEAST 94% THROUGH A 40-MESH SIEVE; AND CHILLING THE ATOMIZED ASPHALT WITH A SHOWER OF WATER TO A TEMPERATURE LESS THAN ABOUT 140*F. TO FORM A LIQUID SUSPENSION OF NON-COALESCENT PARTICLES OF ASPHALT IN WATER.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |