US3097144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-cured, polymeric, medicinal dosage film coatings containing a polyvinylpyrrolidone copolymer, polyethenoid acid, and polyethylene glycol
Assignee: Pharmacia and Upjohn Co
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Filing: 1960-10-14
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Granted: 1963-07-09
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Expires: 1980-10-14
Abstract
No abstract record available.
Inventors
- 👤 Gilbert S Banker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/2853; A61K9/284; A61K9/2846; C; C08; C08L; C08L39/00; C08L39/04; C08L39/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
A PROCESS FOR PRODUCING A SOLID MEDICINAL DOSAGE FORM PROTECTED BY A COATING WHICH INCLUDES THE STEPS OF (1) FORMING A COATING ON THE SAID DOSAGE FROM WITH A SOLUTION OF A VOLATILE SOLVENT AND (A) A POLYETHYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF UP TO 20,000 (B) A POLYETHENOID ACID, AND (C) A COPOLYMER REPRESENTED BY THE FOLLOWING FORMULA:
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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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |