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US3224068A
Expired / Lapsed
US
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Process for imparting improved latent crimp to filaments
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-05-15
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Granted: 1965-12-21
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Expires: 1983-05-15
Abstract
No abstract record available.
Inventors
- 👤 Edington Robert Alexander
- 👤 Barlow George Edward
- 👤 Checkland Peter Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:11
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR IMPROVING IMPARTING OF A LATENT CRIMP TO CONTINUOUS SYNTHETIC LINEAR POLYMER FILAMENTS WHICH ON RELAXING WILL HAVE MORE UNIFORMITY AND WILL HAVE A GREATER REGULARITY OF BULK ALONG THE LENGTH OF SAID FILAMENTS COMPRISING PASSING CONTINUOUS SYNTHETIC LINEAR POLYMER FILAMENTS OVER A NARROW SURFACE INDIRECTLY HEATED TO A TEMPERATURE ABOVE THE MELTING TEMPERATURE OF SAID FILAMENTS IN SUCH A MANNER THAT SAID FILAMENTS ARE UNIFORMLY HEATED ON ONE SIDE CONTINUOUSLY ALONG THEIR LENGTH.
Claim 2
Dependent Claim
76 words
A PROCESS FOR IMPROVING IMPARTING OF A LATENT CRIMP TO CONTINUOUS SYNTHETIC LINEAR POLYMER FILAMENTS WHICH ON RELAXING WILL HAVE MORE UNIFORMITY AND WILL HAVE A GREATER REGULARITY OF BULK ALONG THE LENGTH OF SAID FILAMENTS COMPRISING PASSING CONTINUOUS SYNTHETIC LINEAR POLYMER FILAMENTS OVER A NARROW SURFACE INDIRECTLY HEATED TO A TEMPERATURE ABOVE THE MELTING TEMPERATURE OF SAID FILAMENTS IN SUCH A MANNER THAT SAID FILAMENTS ARE UNIFORMLY HEATED ON ONE SIDE CONTINUOUSLY ALONG THEIR LENGTH.
References Cited (Backward Citations)
CA600877A
Cited
US1330534A
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US2919534A
Cited
GB808213A
Cited
US3025584A
Cited
US3017684A
Cited
US3112551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |