Patent US2716049A successfully refreshed from Google Patents.
US2716049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble yarn
Assignee: EIDP Inc
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Filing: 1951-11-01
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Granted: 1955-08-23
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Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Latour Theodore Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/14; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR STABILIZING FRESHLY SPUN YARN FORMED BY SPINNING A SOLUTION OF 82% TO 94% SAPONIFIED POLYVINYL ESTER THROUGH A SPINNERET INTO A CONCENTRATED SULFATE SALT COAGULATION BATH WHICH COMPRISES REMOVING THE SULFATE SALT FROM THE YARN WITH A CONCENTRATED AQUEOUS SOLUTION OF A VOLATILE SALT CONTAINING FROM 0.5% TO 2.0% OF BORIC ACID AND DRYING THE YARN AT ELEVATED TEMPERATURE TO REMOVE THE WATER AND VOLATILE SALT.
Claim 2
Dependent Claim
69 words
A PROCESS FOR STABILIZING FRESHLY SPUN YARN FORMED BY SPINNING A SOLUTION OF 82% TO 94% SAPONIFIED POLYVINYL ESTER THROUGH A SPINNERET INTO A CONCENTRATED SULFATE SALT COAGULATION BATH WHICH COMPRISES REMOVING THE SULFATE SALT FROM THE YARN WITH A CONCENTRATED AQUEOUS SOLUTION OF A VOLATILE SALT CONTAINING FROM 0.5% TO 2.0% OF BORIC ACID AND DRYING THE YARN AT ELEVATED TEMPERATURE TO REMOVE THE WATER AND VOLATILE SALT.
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) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |