US2664967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for contacting gaseous material with finely divided solids
Assignee: Standard Oil Development Co
•
Filing: 1950-03-13
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Granted: 1954-01-05
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Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Byron V Molstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:14
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; B01J8/30; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/10; B01D53/12; B01J8/36; C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/08; C10B49/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2270903A
Cited
US2444990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |