US3149041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film coating for tablets and the like and method of coating
Assignee: Dow Chemical Co
•
Filing: 1962-04-09
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Granted: 1964-09-15
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Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Sampson F Jeffries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:32
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/284; A61K9/2853
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A FLUID COMPOSITION ADAPTED FOR APPLICATION TO TABLETS AND THE LIKE IN THE FORMATION OF A FILM COATING THEREON WHICH CONSISTS ESSENTIALLY OF; FROM 22 TO 32 PERCENT BY WEIGHT OF A WATER-SOLUBLE, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF 3000 TO 7500; FROM 5.5 TO 11.5 PERCENT OF A COPOLYMER OF (-VINYL-5-METHYL-2OXAZOLIDINONE AND VINYL ACETATE IN WHICH THE RELATIVE PROPORTION OF THE MOLECULAR MOIETIES IN THE COPOLYMER IS IN THE RANGE OF FROM 1:3 TO 3:1; FROM ABOUT 2.5 TO 3.2 PERCENT OF A PLASTICIZING AGENT; AND FROM ABUT 59 TO 64 PERCENT BY WEIGHT OF A VOLATILE, NON-AQUEOUS SOLVENT THEREFOR.
Claim 2
Dependent Claim
105 words
A FLUID COMPOSITION ADAPTED FOR APPLICATION TO TABLETS AND THE LIKE IN THE FORMATION OF A FILM COATING THEREON WHICH CONSISTS ESSENTIALLY OF; FROM 22 TO 32 PERCENT BY WEIGHT OF A WATER-SOLUBLE, POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF 3000 TO 7500; FROM 5.5 TO 11.5 PERCENT OF A COPOLYMER OF (-VINYL-5-METHYL-2OXAZOLIDINONE AND VINYL ACETATE IN WHICH THE RELATIVE PROPORTION OF THE MOLECULAR MOIETIES IN THE COPOLYMER IS IN THE RANGE OF FROM 1:3 TO 3:1; FROM ABOUT 2.5 TO 3.2 PERCENT OF A PLASTICIZING AGENT; AND FROM ABUT 59 TO 64 PERCENT BY WEIGHT OF A VOLATILE, NON-AQUEOUS SOLVENT THEREFOR.
References Cited (Backward Citations)
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US2818362A
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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) | 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 |