US2990236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning process
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1958-03-18
•
Granted: 1961-06-27
•
Expires: 1978-03-18
Abstract
No abstract record available.
Inventors
- 👤 Riseley Eric Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:18
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A MELT SPINNING PROCESS FOR THE PRODUCTION OF FINE DENIER FILAMENTS COMPRISING EXTRUDING MOLTEN POLYMER THROUGH A MULTI-HOLE SPINNERET TO FORM FILAMENTS, AND PASSING THE RESULTANT FILAMENTS WITHOUT MATERIAL FRICTIONAL DRAG ABOUT GUIDE MEANS LOCATED IN THE REGION WHERE THE FILAMENTS SOLIDIFY AND BECOME SUBSTANTIALLY NON-TACKY TO
Claim 2
Dependent Claim
47 words
A MELT SPINNING PROCESS FOR THE PRODUCTION OF FINE DENIER FILAMENTS COMPRISING EXTRUDING MOLTEN POLYMER THROUGH A MULTI-HOLE SPINNERET TO FORM FILAMENTS, AND PASSING THE RESULTANT FILAMENTS WITHOUT MATERIAL FRICTIONAL DRAG ABOUT GUIDE MEANS LOCATED IN THE REGION WHERE THE FILAMENTS SOLIDIFY AND BECOME SUBSTANTIALLY NON-TACKY TO
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |