US3498026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange process and apparatus for continuous removal of gases
Assignee: JOSEPH F DALY
•
Filing: 1968-06-24
•
Granted: 1970-03-03
•
Expires: 1988-06-24
Abstract
No abstract record available.
Inventors
- 👤 Harry Messinger
- 👤 Joseph F Daly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:40
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/18; B01D53/00; B01D53/02; B01D53/06; B01D2253/00; B01D2253/20; B01D2253/206; B01D2257/00; B01D2257/50; B01D2257/504; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/40092; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2222828A
Cited
US2713077A
Cited
US3407045A
Cited
US3405508A
Cited
US3420773A
Cited
US3398509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |