Patent US4292324A successfully refreshed from Google Patents.
US4292324A
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Aqueous zinc solutions for medical use
Assignee: Draco AB
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Filing: 1979-03-19
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Granted: 1981-09-29
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Expires: 1999-03-19
Abstract
Abstract A pharmaceutical composition containing zinc in the form of one or more water soluble zinc salts and a complex-former selected from the group consisting of hydroxycarboxylic acids, acid anhydrides, or salts thereof. The water solutions thereof give a palatable, acceptable peroral zinc solution and are useful for treating leg ulcers, post-operative wounds, decubital ulcers and other diseased conditions in zinc anemia.
Inventors
- 👤 Karl E. Jonsson
- 👤 Nils F. E. Moren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:50
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0087; A61K9/0095; A61K33/00; A61K33/24; A61K33/30; A61K9/0002; A61K9/0007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
In the treatment of zinc deficiency in mammals, including humans, by administering zinc gastrointestinally, the improvement which comprises administering zinc orally in the form of a palatable aqueous solution containing a zinc salt and a complex-forming carboxylic acid selected from the group consisting of citric acid, tartaric acid, malic acid, lactic acid, and glycolic acid, and acid anhydrides and salts thereof, the relation of complex former to zinc being at least equimolecular and the amount of zinc being 3 to 500 mg per peroral dose, the pH of the solution being in the range of 3 to 9.
Claim 2
Dependent Claim
98 words
In the treatment of zinc deficiency in mammals, including humans, by administering zinc gastrointestinally, the improvement which comprises administering zinc orally in the form of a palatable aqueous solution containing a zinc salt and a complex-forming carboxylic acid selected from the group consisting of citric acid, tartaric acid, malic acid, lactic acid, and glycolic acid, and acid anhydrides and salts thereof, the relation of complex former to zinc being at least equimolecular and the amount of zinc being 3 to 500 mg per peroral dose, the pH of the solution being in the range of 3 to 9.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the zinc salt is selected from the group consisting of zinc chloride, zinc nitrate, zinc sulphate, zinc acetate, and zinc carbonate.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein the pH of the solution is regulated to a pH in the range 3 to 6.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the solution is a carbonated aqueous solution.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the solution is a non-carbonated aqueous solution.
References Cited (Backward Citations)
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |