Patent FR1075197A successfully refreshed from Google Patents.
US2658835A
Expired / Lapsed
US
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Sizing medium and film sized therewith
Assignee: Akzo Nobel UK PLC
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Filing: 1949-10-21
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Granted: 1953-11-10
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Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Roy P Wymbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:24
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C08J2301/00; C08J2301/04; C08J2301/08; C08J2471/00; C08J2491/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN AQUEOUS SOFTENING AND SIZING MEDIUM SUITABLE FOR APPLICATION TO GEL FILMS OF REGNERATED CELLULOSE, SAID MEDIUM COMPRISING 5% GLYCEROL, 0.1% COLLOIDAL SILICA, AND 0.1% OF A CONDENSTATE OF STEARIC ACID WITH ETHYLENE OXIDE CONTAINING 50 ETHYLENE OXIDE UNITS PER MOLECULE.
Claim 2
Dependent Claim
41 words
AN AQUEOUS SOFTENING AND SIZING MEDIUM SUITABLE FOR APPLICATION TO GEL FILMS OF REGNERATED CELLULOSE, SAID MEDIUM COMPRISING 5% GLYCEROL, 0.1% COLLOIDAL SILICA, AND 0.1% OF A CONDENSTATE OF STEARIC ACID WITH ETHYLENE OXIDE CONTAINING 50 ETHYLENE OXIDE UNITS PER MOLECULE.
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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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |