US2949378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt compositions
Assignee: Nynas-Petroleum AB
•
Filing: 1954-12-06
•
Granted: 1960-08-16
•
Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 Agren Per Henning Wilhelm
- 👤 Flemmert Gosta Lennart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:08
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A NOVEL ASPHALTIC COMPOSITION HAVING IMPROVED HARDNESS, STRENGTH, AND ELASTICITY WHICH COMPRISES BETWEEN ABOUT 75 AND 99% BY VOLUME OF AN ASPHALTIC MATERIAL IN ADMIXTURE WITH BETWEEN ABOUT 1-25% BY VOLUME OF A FINELY DIVIDED SOLID FILLER, SAID FILLER HAVING A MEAN PARTICLE SIZE OF WITHIN THE RANGE OF ABOUT 0.005 TO 0.05 MICRON AND BEING SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, ALUMINUM OXIDE TITANIUM DIOXIDE AND FERRIC OXIDE.
Claim 2
Dependent Claim
71 words
A NOVEL ASPHALTIC COMPOSITION HAVING IMPROVED HARDNESS, STRENGTH, AND ELASTICITY WHICH COMPRISES BETWEEN ABOUT 75 AND 99% BY VOLUME OF AN ASPHALTIC MATERIAL IN ADMIXTURE WITH BETWEEN ABOUT 1-25% BY VOLUME OF A FINELY DIVIDED SOLID FILLER, SAID FILLER HAVING A MEAN PARTICLE SIZE OF WITHIN THE RANGE OF ABOUT 0.005 TO 0.05 MICRON AND BEING SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, ALUMINUM OXIDE TITANIUM DIOXIDE AND FERRIC OXIDE.
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |