US3681280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of pigmented polyolefin fibers
Assignee: Montedison SpA
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Filing: 1970-09-08
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Granted: 1972-08-01
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Expires: 1990-09-08
Abstract
Abstract METHOD OF PREPARING PIGMENTED POLYOLEFINS. INVOLVES ADMIXING MOLTEN POLYOLEFIN WITH A LIQUID DISPERSION OF PIGMENT TO FINELY DISPERSE PIGMENT IN THE POLYOLEFIN, THEREAFTER REMOVING THE LIQUID FROM THE MOLTEN MASS, AND THEN EXTRUDING.
Inventors
- 👤 Benito Beghelli
- 👤 Giampaolo Guerani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:02
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/2053; C08J3/2056; D; D01; D01F; D01F1/00; D01F1/02; D01F1/04; D01F6/00; D01F6/02; D01F6/04; D01F6/28; D01F6/30
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |