Patent US3794464A successfully refreshed from Google Patents.
US3794464A
Expired / Lapsed
US
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Alkoxylated aliphatic polyethylen-imines to inhibit ozone fading of dyed polyamides
Assignee: Honeywell International Inc
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Filing: 1972-02-04
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Granted: 1974-02-26
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Expires: 1992-02-04
Abstract
Abstract WHEN FROM ABOUT 0.3% TO ABOUT 5% OF POLYTHERTIARY AMINES FORMED FROM THE REACTION OF POLYETHYLENIMINE WITH ALKYLENE OXIDES ARE COATED ON NYLON FIBER, OR ARE ADDED TO THE DYEBATH IMPROVED DYEFASTNESS IS ACHIEVED COMPARED TO AN UNTREATED DYE NYLON FIBER WHEN THIS FIBER IS EXPOSED TO OZONE.
Inventors
- 👤 R Lofquist
- 👤 P Saunders
- 👤 G Weedon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:45
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/607; D06P1/6076; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/242; Y; Y10; Y10S; Y10S8/00; Y10S8/907; Y10S8/929
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |