US2524644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing molding bituminous material and product thereof
Assignee: Richardson Co
•
Filing: 1945-08-03
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Granted: 1950-10-03
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Expires: 1965-08-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Wentland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:49
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE PROCESS OF PREPARING A MOLDING COMPOSITION OF BITUMEN AND FILLER, THE STEPS OF MIXING LIME WITH RESIDUAL ASPHATIC BASE PETROLEUM OILS, AND BLOWING THE MIXTURE WHICH IN MOLTEN CONDITION FOR A NUMBER OF HOURS UNTIL THE BALL AND RING MELT POINT HAS BEEN RAISED TO A DEGREE WHICH AFTER-BLENDING WILL PRODUCE A BINDER OF THE PENETRATION, MELT POINT AND SUSPECTIBILITY REQUIRED FOR SAID MOLDING COM SUSPECTIBILITY REQUIRED FOR SAID MOLDING COMPOSITION.
Claim 2
Dependent Claim
73 words
IN THE PROCESS OF PREPARING A MOLDING COMPOSITION OF BITUMEN AND FILLER, THE STEPS OF MIXING LIME WITH RESIDUAL ASPHATIC BASE PETROLEUM OILS, AND BLOWING THE MIXTURE WHICH IN MOLTEN CONDITION FOR A NUMBER OF HOURS UNTIL THE BALL AND RING MELT POINT HAS BEEN RAISED TO A DEGREE WHICH AFTER-BLENDING WILL PRODUCE A BINDER OF THE PENETRATION, MELT POINT AND SUSPECTIBILITY REQUIRED FOR SAID MOLDING COM SUSPECTIBILITY REQUIRED FOR SAID MOLDING COMPOSITION.
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) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |