US3149040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film coating for tablets and the like and method of coating
Assignee: Dow Chemical Co
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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
2026-10-23 12:47
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/286; A61K9/2866; A61K9/2853
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A FLUID COMPOSITION ADAPTED FOR APPLICATION TO TABLETS AND THE LIKE IN THE FORMATIN OF A FILM COATING THEREON WHICH CONSISTS ESSENTIALLY OF FROM 0.83 TO 2.8 PARTS OF CELLULOSE ACETATE PHTHALATE AND 0.3 TO 1.6 PARTS OF A PLASTICIZE PER PART OF A POLYOXYETHYLENE DERIVATIVE OF POLYPROPYLENE GLYCOL, SAID DERIVATIVE CONTAINIG ABOUT 80 TO 90 PERCENT OF ETHYLENE OXIDE IN THE MOLECULE, AND THE PROPYLENE GLYCOL BASE UNIT HAVING A MOLECULAR WEIGHT IN THE RANGE OF 1500 TO 1800, DISSOLVED IN A VOLATILE, NONAQUEOUS SOLBENT THEREFOR.
Claim 2
Dependent Claim
87 words
A FLUID COMPOSITION ADAPTED FOR APPLICATION TO TABLETS AND THE LIKE IN THE FORMATIN OF A FILM COATING THEREON WHICH CONSISTS ESSENTIALLY OF FROM 0.83 TO 2.8 PARTS OF CELLULOSE ACETATE PHTHALATE AND 0.3 TO 1.6 PARTS OF A PLASTICIZE PER PART OF A POLYOXYETHYLENE DERIVATIVE OF POLYPROPYLENE GLYCOL, SAID DERIVATIVE CONTAINIG ABOUT 80 TO 90 PERCENT OF ETHYLENE OXIDE IN THE MOLECULE, AND THE PROPYLENE GLYCOL BASE UNIT HAVING A MOLECULAR WEIGHT IN THE RANGE OF 1500 TO 1800, DISSOLVED IN A VOLATILE, NONAQUEOUS SOLBENT THEREFOR.
References Cited (Backward Citations)
GB762229A
Cited
US2881085A
Cited
GB764342A
Cited
US2918411A
Cited
US2957804A
Cited
US2975099A
Cited
US3030273A
Cited
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 |