Patent US3703393A successfully refreshed from Google Patents.
US3703393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphaltic compositions
Assignee: Monsanto Co
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Filing: 1970-09-02
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Granted: 1972-11-21
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Expires: 1990-09-02
Abstract
Abstract THE SOFTENING POINT AND PENETRATION OF AN AIR-BLOWN ASPHALT IS INCREASED BY MIXING THE AIR-BLOWN ASPHALT WITH A LIQUID POLYOLEFIN OIL HAVING AN AVERAGE MOLECULAR WEIGHT OF 500 TO 2,000. THE NOVEL COMPOSITIONS CAN BE UTILIZED FOR VARIOUS APPLICATIONS SUCH AS CALKING COMPOUNDS.
Inventors
- 👤 Russell E Koons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:48
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |