US2468716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of hydrogen-donor textile materials and products thereof
Assignee: Wyeth Holdings LLC
•
Filing: 1947-04-16
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Granted: 1949-04-26
•
Expires: 1967-04-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Nyquist
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:07
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M14/00; D06M15/21; D06M15/227; D06M15/233; D06M15/356; D06M15/3562
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875452A
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US2054131A
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US2173029A
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US2327985A
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GB540613A
Cited
US2343095A
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US2326287A
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US2334476A
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US2335582A
Cited
US2406412A
Cited
US2406454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |