Patent US3105174A successfully refreshed from Google Patents.
Patent US3117019A successfully refreshed from Google Patents.
US3117019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foils and process for coating foils consisting of linear polycarbonates of high molecular weight with cellulose esters
Assignee: Agfa Gevaert NV
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Filing: 1960-09-27
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Granted: 1964-01-07
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Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Cohuen Walther
- 👤 Klockgether Helfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/048; C08J7/052; C08J2369/00; C08J2401/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31591; Y10T428/31855; Y10T428/3188
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A MULTILAYER FOIL WHICH COMPRISES A FOIL OF A HIGH MOLECULAR WEIGHT LINEAR POLYCARBONATE OF AROMATIC DIHYDROXY COMPOUNDS, AN INTERMEDIATE LAYER OF AN ISOCYANATEMODIFIED POLYHYDROXY COMPOUND OF HIGH MOLECULAR WEIGHT WITH AN ADDITIONAL CONTENT OF 5-25 PARTS BY WEIGHT OF A POLYISOCYANATE SELECTED FROM THE CLASS CONSISTING OF HEXAMETHYLENE DIISOCYANATE, 1-METHYL-BENZENE-2,6-DIISOCYANATE, 1-METHYL-BENZENE-2,3-DIISOCYANATE, NAPHTHALENE-1,5DIISOCYANATE, TRIPHENYLMETHANE-4,4'',4" -TRIISOCYANATE OR DIPHENYL-METHANE-4,4''-DIISOCYANATE BASED ON 100 PARTS BY WEIGHT OF THE ISOCYANATE-MODIFIED POLYHYDROXY COMPOUND, AND AN OUTER LAYER OF A CELLULOSE ESTER SELECTED FROM THE CLASS CONSISTING OF CELLULOSE ACETATE, CELLULOSE BUTYRATE, CELLULOSE ACETO BUTYRATE AND CELLULOSE NITRATE.
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |