US3639322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating asphaltenes prior to high temperature processin with various high polymers
Assignee: Sunoco Inc
•
Filing: 1968-06-13
•
Granted: 1972-02-01
•
Expires: 1988-06-13
Abstract
Abstract A PROCESS FOR FROMING IMPROVED ASPHALTENE-HIGH MOLECLAR WEIGHT THERMOPLASTIC POLYMER PRODUCTS WHEREIN THE ASPHALTENE PRIOR TO INCORPORATION INTO THE POLYMERIS SUBJECTED TO A HEATING TREATMENT, AND FURTHER THE PRODUCTS FORMED BY THE IMPROVED PROCESS.
Inventors
- 👤 Robert J Bathgate
- 👤 Jackson S Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:54
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; C08L; C08L101/00; C08L69/00; C08L77/00; C08J2369/00; C08L95/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |