US2904953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of voluminous yarns
Assignee: Acordis UK Ltd
•
Filing: 1955-11-09
•
Granted: 1959-09-22
•
Expires: 1975-11-09
Abstract
No abstract record available.
Inventors
- 👤 Groombridge Denis William
- 👤 Hawtin Selwyn George
- 👤 Downing John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:45
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/22; D01D4/00; D01D4/02; D01D5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
PROCESS FOR THE MANUFACTURE OF VOLUMINOUS YARNS, WHICH COMPRISES EXTRUDING A SOLUTION OF A FILAMENT-FORMING SUBSTANCE IN A VOLATILE SOLVENT INTO AN EVAPORATIVE ATMOSPHERE AT SUCH A HIGH LINEAR RATE THAT THE FILAMENTS FORMED BY EVAPORATION OF THE SAID SOLVENT ARE IMMEDIATELY CRINKLED, AND DOUBLING THE SAID CRINKLED FILAMENTS WITH A SUBSTANTIALLY UNCRINKLED SUPPORT THREAD.
Claim 2
Dependent Claim
55 words
PROCESS FOR THE MANUFACTURE OF VOLUMINOUS YARNS, WHICH COMPRISES EXTRUDING A SOLUTION OF A FILAMENT-FORMING SUBSTANCE IN A VOLATILE SOLVENT INTO AN EVAPORATIVE ATMOSPHERE AT SUCH A HIGH LINEAR RATE THAT THE FILAMENTS FORMED BY EVAPORATION OF THE SAID SOLVENT ARE IMMEDIATELY CRINKLED, AND DOUBLING THE SAID CRINKLED FILAMENTS WITH A SUBSTANTIALLY UNCRINKLED SUPPORT THREAD.
References Cited (Backward Citations)
GB471313A
Cited
US2234763A
Cited
US2262872A
Cited
US2328074A
Cited
US2369395A
Cited
US2517946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |