Patent US2668478A successfully refreshed from Google Patents.
Patent US2734012A successfully refreshed from Google Patents.
US2734012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weftless ribbons and process for
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
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Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:15
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/015; D04H3/08; D04H3/12; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/643
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
AN UNWOVEN FABRIC CONSISTING AOF A WEB OF PARALLEL YARNS ALL OF WHICH ARE COMPOSED OF MATERIALS SELECTED FROM THE CLASS CONSISTING OF CELLULOSE AND CELLULOSE ACETATE AND AT LEAST SOME OF WHICH ARE COMPOSED OF CELLULOSE ACETATE, BONDED TOGETHER BY MEANS OF POLYVINYL ALCOHOL PLASTICIZED WITH DIETHYLENE GLYCOL DIACETATE.
Claim 2
Dependent Claim
50 words
AN UNWOVEN FABRIC CONSISTING AOF A WEB OF PARALLEL YARNS ALL OF WHICH ARE COMPOSED OF MATERIALS SELECTED FROM THE CLASS CONSISTING OF CELLULOSE AND CELLULOSE ACETATE AND AT LEAST SOME OF WHICH ARE COMPOSED OF CELLULOSE ACETATE, BONDED TOGETHER BY MEANS OF POLYVINYL ALCOHOL PLASTICIZED WITH DIETHYLENE GLYCOL DIACETATE.
Claim 3
Dependent Claim
79 words
PROCESS FOR FROMING A WEFTLESS RIBBON WHICH COMPRISES BONDING TOGETHER THE YARNS OF A WARP CONSISTING OF PARALLEL YARNS OF MATERIALS SELECTED FROM THE CLASS CONSISTING OF CELLULOSE AND CELLULOSE ACETATE AND AT LEAST SOME OF WHICH ARE COMPOSED OF CELLULOSE ACETATE, TO FORM A SELFSUPPORTING WEB, BY MEANS OF AN AQUEOUS SOLUTION OF POLYVINYL ALCOHOL PLASTICIZED WITH 50 TO 100 PERCENT OF ITS WEIGHT OF DIETHYLENE GLYCOL DIACETATE, AND EVAPORATING THE WATER AT A TEMPERATURE BELOW 100* C.
Claim 4
Dependent Claim
79 words
PROCESS FOR FROMING A WEFTLESS RIBBON WHICH COMPRISES BONDING TOGETHER THE YARNS OF A WARP CONSISTING OF PARALLEL YARNS OF MATERIALS SELECTED FROM THE CLASS CONSISTING OF CELLULOSE AND CELLULOSE ACETATE AND AT LEAST SOME OF WHICH ARE COMPOSED OF CELLULOSE ACETATE, TO FORM A SELFSUPPORTING WEB, BY MEANS OF AN AQUEOUS SOLUTION OF POLYVINYL ALCOHOL PLASTICIZED WITH 50 TO 100 PERCENT OF ITS WEIGHT OF DIETHYLENE GLYCOL DIACETATE, AND EVAPORATING THE WATER AT A TEMPERATURE BELOW 100* C.
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) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |