Patent US3594470A successfully refreshed from Google Patents.
US3594470A
Expired / Lapsed
US
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Chewable tablets including coated particles of pseudoephedrine-weak cation exchange resin
Assignee: Abbott Laboratories
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Filing: 1968-02-19
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Granted: 1971-07-20
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Expires: 1988-02-19
Abstract
Abstract PHARMACEUTICAL TABLETS CONTAINING BASIC-REACTING DRUGS ARE MADE CHEWABLE AND PALATABLE BY ADSORBING THE DRUG ON A WEAK CATION EXCHANGE RESIN OF SPECIFIC PARTICLE SIZE AND COATING THESE PARTICLES THEREAFTER BUT BEFORE TABLETING.
Inventors
- 👤 Saul Borodkin
- 👤 Dean Paul Sundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:54
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5036; A61K9/5042; A61K9/5047; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K47/585; A61K9/0012; A61K9/0053; A61K9/0056; A61K9/20; A61K9/2072; A61K9/2077; A61K9/2081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |