US3305474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing finely-divided asphaltic material
Assignee: Texaco Inc
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Filing: 1962-03-26
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Granted: 1967-02-21
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Knowles
- 👤 Frederic C Mccoy
- 👤 Harry V Rees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:44
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD FOR PREPARING AN ASPHALTIC POWDER FROM ASPHALTIC RESIDUUM, SAID BEING A A SOLID AT ROOM TEMPERATURE, CONSISTING ESSENTIALLY OF HEATING SAID ASPHALTIC RESIDUUM TO A TEMPERTURE BETWEEN ABOUT 100 AND 200* F. ABOVE THE SOFTENING POINT OF SAID RESIDUUM, INTRODUCING THE RESULTANT MOLTEN ASPHALTIC RESIDUUM INTO A POOL OF AN ANTI-COALESCING LIQUID MAINTAINED AT A TEMPERATURE AT LEAST 75*F. BELOW THAT OF SAID SOFTENING POINT WHILE AGITATING SAID LIQUID SUFFICIENTLY TO CAUSE A VIOLENT AND IRREGULAR MOVEMENT THEREOF, SAID ANTI-COALSCING LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER AND 25 TO 60 VOL. PERCENT AQUEOUS GLYCAL, AQUEOUS GLYCEROL, AQUEOUS ALKANOL AND AQUEOUS ALKANONE OF 1 TO 4 CARBONS, AND SAID ANTI-COALECING LIQUID BEING PRESENT IN VOLUMETRIC EXCESS IN RESPECT TO SAID RESIDUUM, WHEREBY SAID ASPHALTIC POWDER SEPARATES FROM THE FINAL LIQUID PHASE AND RECOVERING SAID POWDER.
Claim 2
Independent Claim
138 words
A METHOD FOR PREPARING AN ASPHALTIC POWDER FROM ASPHALTIC RESIDUUM, SAID BEING A A SOLID AT ROOM TEMPERATURE, CONSISTING ESSENTIALLY OF HEATING SAID ASPHALTIC RESIDUUM TO A TEMPERTURE BETWEEN ABOUT 100 AND 200* F. ABOVE THE SOFTENING POINT OF SAID RESIDUUM, INTRODUCING THE RESULTANT MOLTEN ASPHALTIC RESIDUUM INTO A POOL OF AN ANTI-COALESCING LIQUID MAINTAINED AT A TEMPERATURE AT LEAST 75*F. BELOW THAT OF SAID SOFTENING POINT WHILE AGITATING SAID LIQUID SUFFICIENTLY TO CAUSE A VIOLENT AND IRREGULAR MOVEMENT THEREOF, SAID ANTI-COALSCING LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER AND 25 TO 60 VOL. PERCENT AQUEOUS GLYCAL, AQUEOUS GLYCEROL, AQUEOUS ALKANOL AND AQUEOUS ALKANONE OF 1 TO 4 CARBONS, AND SAID ANTI-COALECING LIQUID BEING PRESENT IN VOLUMETRIC EXCESS IN RESPECT TO SAID RESIDUUM, WHEREBY SAID ASPHALTIC POWDER SEPARATES FROM THE FINAL LIQUID PHASE AND RECOVERING SAID POWDER.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |