US3836618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the uniform distribution of a drug on a granulated base
Assignee: Wyeth LLC
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Filing: 1971-12-23
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Granted: 1974-09-17
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Expires: 1991-12-23
Abstract
Abstract A METHOD FOR MAKING TABLETS CONTAINING A SOLID BIOLOGICALLY ACTIVE COMPOUND IN NON-GRANULAR FORM FIXED TO THE EXTERNAL SURFACE OF A GRANULAR BASE MATERIAL BY: (A) COMBINING A PREDETERMINED AMOUNT OF SAID BIOLOGICALLY ACTIVE COMPOUND WITH AN INERT VOLATILE LIQUID, (B) CONTACTING SAID LIQID AND SAID ACTIVE COMPOUND WITH AN AGITATED MASS OF SAID GRANULAR BASE, AND (C) REMOVING SAID VOLTAILE LIQUID, (D) DIRECTLY COMPRISING THE COATED GRANULAR BASE TO FORM A TABLE.
Inventors
- 👤 R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; A61K9/167; A61K9/1676; A61K9/20; A61K9/2095
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |