US2973018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose triacetate pile fabric and method of making same
Assignee: Acordis UK Ltd
•
Filing: 1956-02-23
•
Granted: 1961-02-28
•
Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Finlayson Donald
- 👤 Krzesinski Boleslaw
- 👤 Cooke Albert William Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:11
CPC Classifications
D; D03; D03D; D03D27/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
PILE FABRICS IN WHICH THE PILE CONTAINS SHORT LENGTHS OF TWISTED YARN MADE UP AT LEAST IN PART OF HEAT SET CELLULOSE TRIACETATE FIBRES HAVING AN ACETYL VALUE ABOVE 60% RECKONED AS ACETIC ACID, THE TWIST RANGING BETWEEN A MINIMUM OF ONE TURN PER PILE LENGTH TO A MAXIMUM OF
Claim 2
Dependent Claim
50 words
PILE FABRICS IN WHICH THE PILE CONTAINS SHORT LENGTHS OF TWISTED YARN MADE UP AT LEAST IN PART OF HEAT SET CELLULOSE TRIACETATE FIBRES HAVING AN ACETYL VALUE ABOVE 60% RECKONED AS ACETIC ACID, THE TWIST RANGING BETWEEN A MINIMUM OF ONE TURN PER PILE LENGTH TO A MAXIMUM OF
Claim 3
Dependent Claim
56 words
PROCESS FOR THE MANUFACTURE OF PILE FABRICS, WHICH COMPRISES THE STEPS OF FORMING INTO A PILE CELLULOSE TRIACETATE YARN IN WHICH THE CELLULOSE TRIACETATE IS IN A METASTABLE FORM IN WHICH THE PROPORTION IN THE CRYSTALLINE STATE IS TOO SMALL TO GIVE A SHARP X-RAY DIFFRACTION DIAGRAM, THE SAID YARN HAVING A TWIST OF LESS THAN
Claim 4
Dependent Claim
56 words
PROCESS FOR THE MANUFACTURE OF PILE FABRICS, WHICH COMPRISES THE STEPS OF FORMING INTO A PILE CELLULOSE TRIACETATE YARN IN WHICH THE CELLULOSE TRIACETATE IS IN A METASTABLE FORM IN WHICH THE PROPORTION IN THE CRYSTALLINE STATE IS TOO SMALL TO GIVE A SHARP X-RAY DIFFRACTION DIAGRAM, THE SAID YARN HAVING A TWIST OF LESS THAN
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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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |