Patent US445697A successfully refreshed from Google Patents.
Patent US3333409A successfully refreshed from Google Patents.
US3333409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing high bulk stretch yarns
Assignee: Moulinage et Retorderie de Chavanoz SA
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Filing: 1966-07-11
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Granted: 1967-08-01
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Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Servage Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:38
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A NOVEL PROCESS COMPRISING TWISTING A SYNTHETIC YARN IN A SUBSTANTIALLY OVERFED CONDITION, HEAT-SETTING THE TWIST IN SAID YARN AT AN ELEVATED TEMPERATURE, WETTING SAID YARN DURING TWISTING AND SUBSEQUENT TO HEAT-SETTING, AND UNTWISTING SAID YARN WHEREBY IT TENDS TO RETURN TO ITS TWISTED CONFIGURATION, SAID YARN THEREBY ASSUMING A CRIMPED CONFIGURATION UNDER RELAXED CONDITIONS.
Claim 2
Dependent Claim
55 words
A NOVEL PROCESS COMPRISING TWISTING A SYNTHETIC YARN IN A SUBSTANTIALLY OVERFED CONDITION, HEAT-SETTING THE TWIST IN SAID YARN AT AN ELEVATED TEMPERATURE, WETTING SAID YARN DURING TWISTING AND SUBSEQUENT TO HEAT-SETTING, AND UNTWISTING SAID YARN WHEREBY IT TENDS TO RETURN TO ITS TWISTED CONFIGURATION, SAID YARN THEREBY ASSUMING A CRIMPED CONFIGURATION UNDER RELAXED CONDITIONS.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |