US3679794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of rapidly disintegrating solid dosage unit forms
Assignee: Organon NV
•
Filing: 1971-09-17
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Granted: 1972-07-25
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Expires: 1991-09-17
Abstract
Abstract A solid dosage unit tablet or pill which is stable at high relative humidities and capable of disintegrating rapidly in the presence of moisture comprises an active ingredient, conventional tableting excipients and/or lubricants, and as a disintegrating agent from about 0.3 to about 3 percent by weight of an alkali metal salt of carboxymethylcellulose having a degree of polymerization between about 100 and about 2000, and a degree of substitution between 0.02 and 0.17 at polymerization degree 100, and between 0.02 and 0.57 at polymerization degree 2000.
Inventors
- 👤 Svend A R Bentholm
- 👤 Wilhelm E Koenen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:40
CPC Classifications
A; A61; A61J; A61J3/00; A61J3/10; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A61K9/2054
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
30 words
The dosage unit of claim 1 in which the proportion of said alKali metal salt of carboxymethylcellulose disintegrating agent is between about 0.5 percent and about 2 percent by weight.
Claim 2
Dependent Claim
14 words
The dosage unit of claim 1 in which said active ingredient is a medicament.
Claim 3
Dependent Claim
14 words
The dosage unit of claim 1 in which said active ingredient is a nutrient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |