US2886210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer of solids
Assignee: Phillips Petroleum Co
•
Filing: 1956-09-28
•
Granted: 1959-05-12
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Cooper
- 👤 Walter C Pouppirt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:11
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR431755A
Cited
US1553476A
Cited
GB268667A
Cited
US2638424A
Cited
US2680084A
Cited
US2721226A
Cited
US2713037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |