US2550722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering solids from gases
Assignee: Standard Oil Development Co
•
Filing: 1947-07-10
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Granted: 1951-05-01
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Expires: 1967-07-10
Abstract
No abstract record available.
Inventors
- 👤 Walter F Rollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/005; B01J8/0055; B01J8/006; B01J8/0075; B01J8/18; B01J8/1836; B01J8/24; B01J8/26; B01J8/28; B01J8/32; B01J8/38; B01J8/384; B01J8/386; C; C07; C07C; C07C51/00; C07C51/54; C07C51/573; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00132; B01J2208/00141; B01J2208/00504; B01J2219/00; B01J2219/00049; B01J2219/00245; B01J2219/00252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |