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US4203997A
Expired / Lapsed
US
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Directly-pressable ascorbic acid-containing granulates
Assignee: Merck Patent GmbH
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Filing: 1978-02-16
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Granted: 1980-05-20
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Expires: 1998-02-16
Abstract
Abstract An ascorbic acid granulate comprising 90-93 wt. % of ascorbic acid, 5-9 wt. % of a sugar or sugar alcohol and about 1-2 wt. % of a lubricant may be directly compressed.
Inventors
- 👤 Walter Kuppers
- 👤 Pasquale Della Mura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:02
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375; A61K9/00; A61K9/20; A61K9/2004; A61K9/2013; A61K9/2018
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
27 words
In a directly pressable granulate comprising 90-93 weight % of ascorbic acid and a binder, the improvement wherein the binder consists essentially of, sorbitol, mannitol or xylitol.
Claim 2
Dependent Claim
27 words
In a directly pressable granulate comprising 90-93 weight % of ascorbic acid and a binder, the improvement wherein the binder consists essentially of, sorbitol, mannitol or xylitol.
Claim 3
Dependent Claim
18 words
The granulate of claim 1 wherein the amount of sugar or sugar alcohol binder is 5-9 weight %.
Claim 4
Dependent Claim
13 words
The granulate of claim 1, wherein the average particle size is 0.1-2 mm.
Claim 5
Dependent Claim
11 words
The compressed product produced by pressing the granulate of claim 1.
Claim 6
Dependent Claim
34 words
The directly pressable ascorbic acid granulate of claim 1 comprising 90-93 weight % of ascorbic acid, 5-9 weight % of a sugar or sugar alcohol binder and about 1-2 weight % of a lubricant.
Claim 7
Dependent Claim
32 words
The granulate of claim 1 which consists essentially of 90-93 weight % of ascorbic acid, 5-9 weight % of a sugar or sugar alcohol and about 1-2 weight % of a lubricant.
Claim 8
Dependent Claim
11 words
The compressed product produced by pressing the granulate of claim 6.
Claim 9
Dependent Claim
16 words
The granulate of claim 1, wherein 8-9 weight % of sugar or sugar alcohol is contained.
Claim 10
Dependent Claim
25 words
The granulate of claim 8, which contains 90 weight % of ascorbic acid, 8-9 weight % of sorbitol and 1-2 weight % of a lubricant.
Claim 11
Dependent Claim
21 words
The granulate of claim 1 which further comprises from 1-2 weight % of a different ingredient which functions as a lubricant.
Claim 12
Dependent Claim
41 words
In a directly compressible ascorbic acid granulate consisting essentially of ascorbic acid and a binder the improvement wherein the sole binder is 5-9 weight % of sugar, sorbitol, mannitol or xylitol and the amount of ascorbic acid is 90-93 weight %.
Claim 13
Dependent Claim
41 words
In a directly compressible ascorbic acid granulate consisting essentially of ascorbic acid and a binder the improvement wherein the sole binder is 5-9 weight % of sugar, sorbitol, mannitol or xylitol and the amount of ascorbic acid is 90-93 weight %.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-20 | 1983-11-19 | 1984-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-20 | 1987-11-19 | 1988-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-20 | 1991-11-19 | 1992-05-20 | $7700.00 | Window Closed / Lapsed |