US2489473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treated textile and process of making
Assignee: Sun Chemical Corp
•
Filing: 1946-11-15
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Granted: 1949-11-29
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Expires: 1966-11-15
Abstract
No abstract record available.
Inventors
- 👤 Zerner Ernst
- 👤 Peter I Pollak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; Y; Y10; Y10S; Y10S162/00; Y10S162/03; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2197
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |