US1575703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of a highly-active decolorizing charcoal
Assignee: FIRM OF GES fur CHEMISCHE PROD
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Filing: 1924-05-02
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Granted: 1926-03-09
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Expires: 1944-05-02
Abstract
No abstract record available.
Inventors
- 👤 Muller-Clemm Hellmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/318; C01B32/324
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) | 1929-03-08 | 1929-09-07 | 1930-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-08 | 1933-09-07 | 1934-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-08 | 1937-09-07 | 1938-03-09 | $7700.00 | Window Closed / Lapsed |