US3812178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters with improved dyeability
Assignee: Honeywell International Inc
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Filing: 1973-04-30
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Granted: 1974-05-21
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Expires: 1993-04-30
Abstract
Abstract COMPOUNDS USEFUL FOR THE PRODUCTION OF CATIONIC DYEABLE POLYESTERS, HAVING THE FROMULA: BIS((4-(M-O3S-)PHENYL)-O-CH2-)C(-CH2-OH)2 WHEREIN M IS SELECTED THE GROUP CONSISTING OF ALKALI METALS AND AMMONIUM.
Inventors
- 👤 G Weedon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:06
CPC Classifications
C; C07; C07C; C07C309/00; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |