Patent US2882912A successfully refreshed from Google Patents.
US2882912A
Expired / Lapsed
US
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Solids flow control process and apparatus
Assignee: Union Oil Company of California
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Filing: 1954-06-25
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Granted: 1959-04-21
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Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Cloyd P Reeg
- 👤 Raoul P Vaell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:24
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/12; C10G49/00; C10G49/10; C10G49/14; B01D2256/00; B01D2256/24; B01D2257/00; B01D2257/30; B01D2257/40; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40088; B01D2259/4009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |