US3488277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing mineral oil-derived pitch
Assignee: Sinclair Research Inc
•
Filing: 1967-02-28
•
Granted: 1970-01-06
•
Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Fauber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:05
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2158772A
Cited
US2054769A
Cited
US2424638A
Cited
US3374104A
Cited
US3288701A
Cited
US3330759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |