US3062672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt-aggregate compositions
Assignee: Shell USA Inc
•
Filing: 1959-09-21
•
Granted: 1962-11-06
•
Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Rudolf E Kerkhoven
- 👤 Dijkstra Follert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:23
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A MOLDABLE ASPHALT-AGGREGATE COMPOSITION CONSISTING ESSENTIALLY OF 4-10% BY WEIGHT OF AN ASPHALTIC BITUMEN HAVING A PENETRATION INDEX LESS THAN +5 WHOSE RING AND BALL SOFTENING POINT AND PENETRATION SATISFY THE FORMULA
Claim 2
Dependent Claim
32 words
A MOLDABLE ASPHALT-AGGREGATE COMPOSITION CONSISTING ESSENTIALLY OF 4-10% BY WEIGHT OF AN ASPHALTIC BITUMEN HAVING A PENETRATION INDEX LESS THAN +5 WHOSE RING AND BALL SOFTENING POINT AND PENETRATION SATISFY THE FORMULA
References Cited (Backward Citations)
US1559731A
Cited
US2080690A
Cited
DE750627C
Cited
US2446903A
Cited
US2572068A
Cited
US2767102A
Cited
US2909440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |