US2647816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a wound package and after-treating the same
Assignee: Akzo Nobel UK PLC
•
Filing: 1948-07-10
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Granted: 1953-08-04
•
Expires: 1968-07-10
Abstract
No abstract record available.
Inventors
- 👤 Orlando A Battista
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:07
CPC Classifications
D; D21; D21H; D21H19/00; D01; D01D; D01D10/00; D01D10/04; D01D10/0418; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D21H13/00; D21H13/02; D21H13/06; D21H25/00; D21H25/02; D21H25/04; D21H5/00; D21H5/12; D21H5/1272; D21H5/1281; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD COMPRISING DISTRIBUTING FROM ABOUT 20 TO 50% BY WEIGHT OF CELLULOSE ESTER FIBERS ON A SURFACE OF AN UNPERFORATED AND UNSLITTED SHEET OF LIQUID-PERMEABLE PAPER FORMED FROM CELLULOSE FIBERS, SAID ESTER FIBERS BEING DISTRIBUTED ONLY AT SPACED PORTIONS OF THE SHEET, RENDERING THE CELLULOSE ESTER FIBERS ADHESIVE AND SUBJECTING THE SHEET TO PRESSURE TO OBTAIN A SHEET IN WHICH THE ESTER FIBERS ARE AUTOGENOUSLY BONDED TO THE CELLULOSE FIBERS, WRAPPING THE UNPERFORATED SHEET ABOUT ALL SURFACES OF AN ANNULAR PACKAGE OF REGENERATE CELLULOSE FILAMENTARY MATERIAL FRESHLY PREPARED FROM VISCOSE, TREATING THE WRAPPED PACKAGE WITH AQUEOUS AFTER-TREATING LIQUIDS INCLUDING AN AQUEOUS ALKALINE SOLUTION WHICH IS A DESULFIDING AGENT FOR THE FILAMENTARY MATERIAL AND A SAPONIFYING AGENT FOR THE CELLULOSE ESTER TO SIMULTANEOUSLY DESULFIDE THE FILAMENTARY MATERIAL AND AT LEAST PARTIALLY DE-ESTERIFY THE ESTERFINALLY WASHING THE WRAPPED PACKAGE, AND THEREAFTER HEATING ALL PORTIONS OF THE WRAPPED PACKAGE
Claim 2
Independent Claim
147 words
THE METHOD COMPRISING DISTRIBUTING FROM ABOUT 20 TO 50% BY WEIGHT OF CELLULOSE ESTER FIBERS ON A SURFACE OF AN UNPERFORATED AND UNSLITTED SHEET OF LIQUID-PERMEABLE PAPER FORMED FROM CELLULOSE FIBERS, SAID ESTER FIBERS BEING DISTRIBUTED ONLY AT SPACED PORTIONS OF THE SHEET, RENDERING THE CELLULOSE ESTER FIBERS ADHESIVE AND SUBJECTING THE SHEET TO PRESSURE TO OBTAIN A SHEET IN WHICH THE ESTER FIBERS ARE AUTOGENOUSLY BONDED TO THE CELLULOSE FIBERS, WRAPPING THE UNPERFORATED SHEET ABOUT ALL SURFACES OF AN ANNULAR PACKAGE OF REGENERATE CELLULOSE FILAMENTARY MATERIAL FRESHLY PREPARED FROM VISCOSE, TREATING THE WRAPPED PACKAGE WITH AQUEOUS AFTER-TREATING LIQUIDS INCLUDING AN AQUEOUS ALKALINE SOLUTION WHICH IS A DESULFIDING AGENT FOR THE FILAMENTARY MATERIAL AND A SAPONIFYING AGENT FOR THE CELLULOSE ESTER TO SIMULTANEOUSLY DESULFIDE THE FILAMENTARY MATERIAL AND AT LEAST PARTIALLY DE-ESTERIFY THE ESTERFINALLY WASHING THE WRAPPED PACKAGE, AND THEREAFTER HEATING ALL PORTIONS OF THE WRAPPED PACKAGE
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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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |