US3723173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating textile fibers prior to forming them into yarn
Assignee: Mk Research and Development Co
•
Filing: 1970-04-23
•
Granted: 1973-03-27
•
Expires: 1990-04-23
Abstract
Abstract A PROCESS FOR TREATING FIBERS BEFORE CARDING AND COMBING TO FORM YARN TO PROVIDE INCREASED STRENGTH AND ELONGATION OF THE FIBERS AND TO REDUCE THE BUILDUP OF STATIC ELECTRICITY DURING HANDLING IS PROVIDE WHICH COMPRISES APPLYING TO THE FIBERS A REACTION PRODUCT WHICH IS OBTAINED FROM A COMPOUND HAVING AN ALKYL GROUP CONTAINING FROM 2 TO 22 CARBON ATOMS AT LEAST ONE NITROGEN ATOM AND AT LEAST ONE REACTIVE HYDROGEN ATOM, AND FROM TWO ALKYLENE OXIDES, ONE BEING ETHYLENE OXIDE CONTAINING TWO CARBON ATOMS, AND THE OTHER HAVING AT LEAST THREE CARBON ATOMS IN THE MOLECULE.
Inventors
- 👤 N Schonfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:43
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/372; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/31504; Y10T428/31855; Y10T428/31931
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |