US2987418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-fibrous regenerated cellulose film carrying modified urea-formaldehyde resin as anchor agent
Assignee: Wyeth Holdings LLC
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Filing: 1956-11-15
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Granted: 1961-06-06
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Expires: 1976-11-15
Abstract
No abstract record available.
Inventors
- 👤 William M Wooding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:29
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/044; C08J2301/00; C08J2301/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31703; Y10T428/31801; Y10T428/31804; Y10T428/31826; Y10T428/31833; Y10T428/31855; Y10T428/31859; Y10T428/3187; Y10T428/31873; Y10T428/31942; Y10T428/31949; Y10T428/31953; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
NON-FIBROUS REGENERATED CELLULOSE FILM CONSISTING ESSENTIALLY OF PLASTICIZED, NON-FIBROUS REGENERATED CELLULOSE FILM IMPREGNATED WITH BETWEEN ABOUT 0.02% TO 5% OF ITS WEIGHT OF A NORMALLY THERMOSETTING, RESINOUS REACTION PRODUCT OF (A) ONE MOLE OF UREA, (B) BETWEEN ABOUT 1.5 AND 3 MOLS OF FORMALDEHYDE, AND (C) BETWEEN 1/6 AND 3 MOLS, OF A NON-IONIC WATER-SOLUBLE POLYHYDROXY-SUBSTITUTED SATURATED ACYCLIC HYDROCARBON AS WATER-SOLUBILIZING AND STABILIZING COMPONENT, SAID RESIN BEING IN THERMOCURED HYDROPHOBIC FORM.
References Cited (Backward Citations)
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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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |