US2993825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing coated cellulosic structures
Assignee: EIDP Inc
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Filing: 1957-11-06
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Granted: 1961-07-25
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Expires: 1977-11-06
Abstract
No abstract record available.
Inventors
- 👤 Gage Thomas Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
C; C08; C08J; C08J5/00; D; D06; D06M; D06M15/00; D06M15/693; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE PROCESS OF PREPARING COATED FIBROUS CELLULOSIC STRUCTURES WHICH COMPRISE AFTER-COATING A CELLULOSIC STRUCTURE BEARING ON ITS SURFACE A COATING CONTAINING A WATERSOLUBLE ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE SALTS OF ACID-CONTAINING POLYSACCHARIDES, POLYVINYL ALCOHOL, GUM TRAGACANTH, POLY(DIETHYLAMINOETHYL)METHACRYLATE, POLYACRYLAMIDE, SODIUM POLYACRYLATE, AND SODIUM ALGINATE, AN ADDUCT REACTION PRODUCT OF AN AROMATIC POLYISOCYANATE AND PHENOL, SAID ADDUCT HAVING THE FORMULA R(HNCOOC6H5)N, WHEREIN R IS AN AROMATIC ORGANIC RADICAL AND N IS AT LEAST 2, WITH AN AQUEOUS DISPERSION CONTAINING A RUBBER LATEX, A PHENOL AND AN ALDEHYDE, SAID PHENOL AND ALDEHYDE BEING CAPABLE OF FORMING A THERMOSETTING RESIN, AND THEREAFTER DRYING THE RESULTING AFTER-COATED STRUCTURE.
Claim 2
Dependent Claim
107 words
THE PROCESS OF PREPARING COATED FIBROUS CELLULOSIC STRUCTURES WHICH COMPRISE AFTER-COATING A CELLULOSIC STRUCTURE BEARING ON ITS SURFACE A COATING CONTAINING A WATERSOLUBLE ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE SALTS OF ACID-CONTAINING POLYSACCHARIDES, POLYVINYL ALCOHOL, GUM TRAGACANTH, POLY(DIETHYLAMINOETHYL)METHACRYLATE, POLYACRYLAMIDE, SODIUM POLYACRYLATE, AND SODIUM ALGINATE, AN ADDUCT REACTION PRODUCT OF AN AROMATIC POLYISOCYANATE AND PHENOL, SAID ADDUCT HAVING THE FORMULA R(HNCOOC6H5)N, WHEREIN R IS AN AROMATIC ORGANIC RADICAL AND N IS AT LEAST 2, WITH AN AQUEOUS DISPERSION CONTAINING A RUBBER LATEX, A PHENOL AND AN ALDEHYDE, SAID PHENOL AND ALDEHYDE BEING CAPABLE OF FORMING A THERMOSETTING RESIN, AND THEREAFTER DRYING THE RESULTING AFTER-COATED STRUCTURE.
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |