US1540446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum gellike absorbent and process for making same
Assignee: BALTIMORE GAS ENGINEERING Corp
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Filing: 1924-07-09
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Granted: 1925-06-02
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Expires: 1944-07-09
Abstract
No abstract record available.
Inventors
- 👤 Robert E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01P; C01P2004/00; C01P2004/50; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-06-01 | 1928-12-01 | 1929-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-06-01 | 1932-12-01 | 1933-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-06-01 | 1936-12-01 | 1937-06-02 | $7700.00 | Window Closed / Lapsed |