US2480628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of zeolytic alkali from gels
Assignee: ExxonMobil Oil Corp
•
Filing: 1946-07-24
•
Granted: 1949-08-30
•
Expires: 1966-07-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Bodkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; B01J13/00; B01J13/0052; B01J13/0069
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |