US3149038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film coating for tablets and the like and method of coating
Assignee: Dow Chemical Co
•
Filing: 1961-09-05
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Granted: 1964-09-15
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Sampson F Jeffries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/2853; A61K9/286; A61K9/2866; C; C08; C08L; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A COATED TABLET HAVING AS THE COATING MATERIAL A THIN FILM CONSISTING ESSENTIALLY OF FROM ABOUT 1.2 TO 5 PARTS OF CELLULOSE ACETATE PHTHALATE PER PART OF A WATER-SOLUBLE ETHYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT ABOVE 200,000.
Claim 2
Dependent Claim
38 words
A COATED TABLET HAVING AS THE COATING MATERIAL A THIN FILM CONSISTING ESSENTIALLY OF FROM ABOUT 1.2 TO 5 PARTS OF CELLULOSE ACETATE PHTHALATE PER PART OF A WATER-SOLUBLE ETHYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT ABOVE 200,000.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |