Patent US2448337A successfully refreshed from Google Patents.
US2448337A
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Activated carbon products
Assignee: Individual
•
Filing: 1944-12-02
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Granted: 1948-08-31
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Expires: 1964-12-02
Abstract
No abstract record available.
Inventors
- 👤 Wickenden Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:10
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3679; C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/336; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19664E
Cited
US1763102A
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US1968846A
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GB450450A
Cited
US2149671A
Cited
US2209069A
Cited
US2393106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |