US3833528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous composition
Assignee: BP PLC
•
Filing: 1972-03-01
•
Granted: 1974-09-03
•
Expires: 1992-03-01
Abstract
Abstract 1 BITUMEN, FLUX OIL AND 5-25% BY WEIGHT OF EPT RUBBER ARE BLOWN TO FORM A CCONCENTRATE WHICH IS THEN BLENDED WITH UNBLOWN BITUMEN TO FORM A PAVING GRADE MATERIAL.
Inventors
- 👤 R Behling
- 👤 M Oelsner
- 👤 E Zenke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:30
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |