US2540182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of flocculable and deflocculable material
Assignee: Edgar Brothers Co
•
Filing: 1949-05-17
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Granted: 1951-02-06
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Expires: 1969-05-17
Abstract
No abstract record available.
Inventors
- 👤 Albert Charles Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:35
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01J; B01J13/00; B01J13/0004; B01J13/0034; C; C09; C09C; C09C1/00; C09C1/02; C09C1/021; C09C1/04; C09C1/06; C09C1/22; C09C1/40; C09C1/42; C09C3/00; C09C3/04; C09C3/043; C01; C01P; C01P2006/00; C01P2006/22; Y; Y10; Y10S; Y10S159/00; Y10S159/20
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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |