Patent US5199393A successfully refreshed from Google Patents.
Patent US3022545A successfully refreshed from Google Patents.
US3022545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for crimping cellulose triacetate fibers
Assignee: Acordis UK Ltd
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Filing: 1957-08-29
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Granted: 1962-02-27
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Expires: 1977-08-29
Abstract
No abstract record available.
Inventors
- 👤 Wylde Joseph Rowland
- 👤 Drewitt James Gordon Napier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:16
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
PROCESS FOR IMPARTING CRIMP OF A HIGH DEGREE OF PERMANENCE TO THE CELLULOSE TRICETATE FIBRES OF A STRAND CONTAINING SUCH FIBRES, WHICH COMPRISES BRINGING THE SAID FIBRES OF SAID STRAND INTO A CRIMPLED CONDITION AND HEATING THE STRAND WHILE IT CARRIES AN AGENT CONSISTING ESSENTIALLY OF DIETHYLENE GLYCOL DIACETATE AND WATER.
Claim 2
Dependent Claim
51 words
PROCESS FOR IMPARTING CRIMP OF A HIGH DEGREE OF PERMANENCE TO THE CELLULOSE TRICETATE FIBRES OF A STRAND CONTAINING SUCH FIBRES, WHICH COMPRISES BRINGING THE SAID FIBRES OF SAID STRAND INTO A CRIMPLED CONDITION AND HEATING THE STRAND WHILE IT CARRIES AN AGENT CONSISTING ESSENTIALLY OF DIETHYLENE GLYCOL DIACETATE AND WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |