US3975513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained-release tablet for prophylaxis against trace element deficiency diseases
Assignee: Gewerkschaft Victor
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Filing: 1974-08-30
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Granted: 1976-08-17
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Expires: 1994-08-30
Abstract
Abstract For the treatment of trace element deficiency in animals over a prolonged period of time there is orally administered a tablet containing said trace element in a composition which releases said trace element slowly in the stomach of said animal, said tablet having a minimum dimension such that it cannot leave the stomach through the pylorus during said prolonged period of time. For animals such as piglets, about 3 mm is a suitable minimum dimension. The tablet may comprise a homogeneous mixture of a slow release substance and the trace element and/or there may be a slow release coating on the tablet, such as a polymer of vinylidene chloride, an acrylic acid ester, vinyl chloride or vinyl propionate.
Inventors
- 👤 Horstmar Hecht
- 👤 Wolfgang Laue
- 👤 Manfred Kirchgebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:56
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/284; A23; A23K; A23K20/00; A23K20/20; A23K20/30; A23K40/00; A23K40/20; A23K40/30; A23K50/00; A23K50/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A sustained-action tablet for treating iron deficiency comprising a tablet containing iron-II-fumarate or iron-II-diphosphate + iron powder and of a composition such that it releases said trace element over a prolonged period of time, said tablet being about 18 mm long and having a minimum transverse dimension of at least about 3 mm and including an acid-resistant physiologically compatible sustained release plastic coating which ensures the tablet maintains its size during the sustained release, whereby said tablet is not eliminated prematurely through the pylorus of a suckling piglet yet is eliminated when the piglet pylorus opening has increased in size due to the growth of the pig.
Claim 2
Dependent Claim
107 words
A sustained-action tablet for treating iron deficiency comprising a tablet containing iron-II-fumarate or iron-II-diphosphate + iron powder and of a composition such that it releases said trace element over a prolonged period of time, said tablet being about 18 mm long and having a minimum transverse dimension of at least about 3 mm and including an acid-resistant physiologically compatible sustained release plastic coating which ensures the tablet maintains its size during the sustained release, whereby said tablet is not eliminated prematurely through the pylorus of a suckling piglet yet is eliminated when the piglet pylorus opening has increased in size due to the growth of the pig.
Claim 3
Dependent Claim
29 words
The tablet according to claim 1, wherein said tablet further contains at least one trace element selected from the group consisting of manganese, cobalt, zinc, copper, selenium and fluorine.
Claim 4
Dependent Claim
29 words
The tablet according to claim 2, wherein said plastic is selected from the group consisting of copolymers of vinylidene chlorine, an acrylic acid ester, vinyl chloride and vinyl propionate.
Claim 5
Dependent Claim
27 words
The process for treating iron deficiency in a piglet over a prolonged period of time comprising orally administering to said piglet a tablet according to claim 1.
Claim 6
Dependent Claim
28 words
The process of claim 4, wherein said tablet further contains at least one trace element selected from the group consisting of manganese, cobalt, zinc, copper, selenium and fluorine.
Claim 7
Dependent Claim
28 words
The process of claim 4, wherein said plastic is selected from the group consisting of copolymers of vinylidene chlorine, and acrylic acid ester, vinyl chloride and vinyl propionate.
Claim 8
Dependent Claim
63 words
The process of claim 4, wherein said tablet has a rounded oblong shape, is about 18 mm long and about 5 mm in diameter, is coated with about 0.5 weight percent of a copolymer of vinylidene chloride and acrylic acid ester and consists essentially of finely powdered iron-II fumarate mixed with about 15% of methylcellulose and about 1% of magnesium stearate by 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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |