US3829561A
Expired / Lapsed
US
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Iron preparation and process for its manufacture
Assignee: Hoechst AG
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Filing: 1969-03-19
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Granted: 1974-08-13
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Expires: 1989-03-19
Abstract
Abstract Iron preparation for oral application containing ferro-ions in the form of an iron-II-salt, a physiologically tolerable solid acid and a compound yielding carbon dioxide.
Inventors
- 👤 H Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:31
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/24; A61K33/26; A61K31/00; A61K31/28; A61K31/295; A61K47/00; A61K47/02; A61K47/06; A61K47/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
14 words
A preparation as in claim 1 wherein said iron (II) salt is iron sulfate.
Claim 2
Dependent Claim
13 words
A preparation as in claim 1 wherein said solid acid is ascorbic acid.
Claim 3
Dependent Claim
12 words
A preparation as in claim 1 wherein said bicarbonate is sodium bicarbonate.
Claim 4
Dependent Claim
11 words
A preparation as in claim 1 in a hard gelatine capsule.
Claim 5
Dependent Claim
62 words
An iron preparation in dry dosage unit form for oral administration, said preparation comprising a. iron (II) sulfate in an amount containing from 10 mg. to 200 mg. of ferro-ions; b. sodium bicarbonate; c. from 50 mg. to 1,000 mg. of ascorbic acid; said bicarbonate being present in an amount approximately equivalent to said acid for evolving carbon dioxide in the stomach.
Claim 6
Dependent Claim
11 words
A preparation as in claim 6 in a hard gelatine capsule.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |