US3987204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct compression vehicle
Assignee: Sucrest Corp
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Filing: 1975-04-24
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Granted: 1976-10-19
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Expires: 1995-04-24
Abstract
Abstract An intimate, co-dried mixture of a major amount of tricalcium phosphate and a minor amount of locust bean gum is useful for the preparation of tablets by the direction compression technique. The mixture is blended with an active material and, if desired, fillers, disintegrating agents and lubricants, and the resulting blend is compressed without prior granulation or slugging to form a tablet containing at least about 10 weight per cent of the co-dried mixture.
Inventors
- 👤 Anthony Monti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:21
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A23; A23P; A23P10/00; A23P10/20; A23P10/28; A61J; A61J3/00; A61J3/10; A61K9/2009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A particulate composition useful as a direct compression vehicle for forming tablets consisting essentially of a dry mixture of: a. About 100 parts by weight of an intimate co-dried blend of a minor but effective portion of locust bean gum comprising at least about 0.5 weight per cent of said co-dried blend and a major portion of tricalcium phosphate; b. Up to about 200 parts of granular tricalcium phosphate as a diluent for said blend and in an amount sufficient to increase the incidence of picking in the absence of a lubricant; and c. Locust bean gum in an amount of from about 5 to about 15 weight per cent, based upon said co-dried blend and from about 3 to about 7 weight per cent, based upon the combined weight of said co-dried blend and granular tricalcium phosphate.
Claim 2
Dependent Claim
138 words
A particulate composition useful as a direct compression vehicle for forming tablets consisting essentially of a dry mixture of: a. About 100 parts by weight of an intimate co-dried blend of a minor but effective portion of locust bean gum comprising at least about 0.5 weight per cent of said co-dried blend and a major portion of tricalcium phosphate; b. Up to about 200 parts of granular tricalcium phosphate as a diluent for said blend and in an amount sufficient to increase the incidence of picking in the absence of a lubricant; and c. Locust bean gum in an amount of from about 5 to about 15 weight per cent, based upon said co-dried blend and from about 3 to about 7 weight per cent, based upon the combined weight of said co-dried blend and granular tricalcium phosphate.
References Cited (Backward Citations)
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Cited
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US3821414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |