US3560421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving polyamide filament lubricity
Assignee: MORSANTO CO
•
Filing: 1969-07-28
•
Granted: 1971-02-02
•
Expires: 1989-07-28
Abstract
Abstract THE LUBRICITY OF POLYAMIDE FILAMENT CAN BE SUBSTANTIALLY IMPROVED WITHOUT SIGNIFICANTLY ALTERING THE APPEARANCE OF THE FILAMENTS BY DISPERSING A SMALL AMOUNT OF A MICROCRYSTALLINE WAX HAVING A REFRACTIVE INDEX GREATER THAN 1.5 AND LESS THAN 1.6 IN THE POLYAMIDE PRIOR TO ITS EXTRUSION IN FILAMENTARY FORM.
Inventors
- 👤 Paul R Cox Jr
- 👤 Lawrence W Crovatt Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |