Patent US3703392A successfully refreshed from Google Patents.
US3703392A
Expired / Lapsed
US
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Shaped articles of improved dyeability
Assignee: Celanese Corp
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Filing: 1970-09-08
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Granted: 1972-11-21
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Expires: 1990-09-08
Abstract
Abstract A COMPOSITION OF IMPROVED DYE RECEPTIVITY COMPRISING A POLYMER CAPABLE OF BEING FORMED INTO SHAPED ARTICLES AND A SULFONATED ARYL PHOSPHATE OR AN ARYL PHOSPATE ALKALI METAL SULFONATE.
Inventors
- 👤 Joseph Di Pietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:39
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/24; D01F2/28; C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |