US3447887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for adjusting the dye receptivity of acrylic fibers
Assignee: EIDP Inc
•
Filing: 1965-06-21
•
Granted: 1969-06-03
•
Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 Alex Lindenhovius
- 👤 Petrus Klaver
- 👤 Johannes Andreas Appel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:39
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/76; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927; Y10S8/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |