US2446682A
Expired / Lapsed
US
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Modifying cellulose textiles with an alkylolamine-copper complex
Assignee: CHEMICAL LAB Inc
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Filing: 1944-05-10
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Granted: 1948-08-10
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Expires: 1964-05-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Whitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/58; D06M11/59; D06M11/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2072870A
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US2092009A
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US2092696A
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US2148659A
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US2189918A
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DE672116C
Cited
GB485920A
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US2332047A
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US2310257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |