US3622677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed tablets containing compacted starch as binder-disintegrant ingredient
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1969-07-07
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Granted: 1971-11-23
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Expires: 1989-07-07
Abstract
Abstract A directly compressed tablet containing as a binder-disintegrant ingredient, a partially cold-water soluble, cold-water swelling starch material derived from compacted granular starch, e.g. compacted native corn starch. The compacted granular starch is a superficially dry, free-flowing powder in which the starch is in the form of a mixture of birefringent granules and nonbirefringent fragments of granules, in which some aggregates of granules and fragments are present. The use of the starch binder-disintegrant ingredient allows active ingredients, e.g. pharmaceuticals, to be tabletted by direct compression.
Inventors
- 👤 Rolland W P Short
- 👤 Frank Verbanac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:44
CPC Classifications
A; A61; A61J; A61J3/00; A61J3/10; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A61K9/2059
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
The compressed tablet according to claim 1 wherein said active ingredient is a pharmaceutically active compound.
Claim 2
Dependent Claim
16 words
The compressed tablet according to claim 1 wherein said active ingredient is a nonpharmaceutically active compound.
Claim 3
Dependent Claim
28 words
The compressed tablet according to claim 1 wherein said compacted starch powder constitutes at least about 50 percent of the total weight amount of binder in said tablet.
Claim 4
Dependent Claim
34 words
The compressed tablet according to claim 1 wherein the amount of said active ingredient in said tablet is in the range of from about 5 percent to about 90 percent dry substance weight basis.
Claim 5
Dependent Claim
81 words
The compressed tablet according to claim 1 wherein said compacted starch powder constitutes at least about 50 percent of the total weight amount of binder in said tablet, has a cold-water solubility in the range of from about 6 to about 20 percent, dry substance weight basis, and a swelling power in the range of from about 3.5 to about 10, and contains, on a total weight basis, from about 45 to about 75 percent of material which is -270 mesh.
Claim 6
Dependent Claim
18 words
The compressed tablet according to claim 6 wherein said compacted starch is a compacted granular cornstarch raw material.
Claim 7
Dependent Claim
55 words
The compressed tablet according to claim 7 wherein said granular cornstarch raw material is bleached native cornstarch and said compacted starch powder has a cold-water solubility in the range of from about 6 to about 15 percent, dry substance weight basis, and a swelling power in the range of from about 5 to about 8.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |