Patent US2959827A successfully refreshed from Google Patents.
Patent US2604715A successfully refreshed from Google Patents.
US2590145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas purifying method and apparatus
Assignee: Elliott Co
•
Filing: 1950-04-13
•
Granted: 1952-03-25
•
Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Aronson David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:29
CPC Classifications
B; B01; B01D; B01D51/00; B01D51/10; F; F25; F25J; F25J3/00; F25J3/08; F25J2210/00; F25J2210/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1376985A
Cited
US1626345A
Cited
US1976933A
Cited
US2460859A
Cited
US2496380A
Cited
US2526996A
Cited
US2534478A
Cited
US2509034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |