Patent US4089979A successfully refreshed from Google Patents.
US4089979A
Expired / Lapsed
US
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Formulation of feed additives, mineral supplements and liquid feeds for animals and preservatives for silage, hay and grain
Assignee: Mallinckrodt Veterinary Inc
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Filing: 1975-04-03
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Granted: 1978-05-16
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Expires: 1995-04-03
Abstract
Abstract Liquid compositions, such as animal feeds, feed additives, mineral supplements and preservatives for hay, silage, grain, include a thixotropic agent, such as a hydrophilic colloid, which causes the compositions to form pseudoplastic, thixotropic gels and as an active ingredient urea, urea phosphate, phosphoric acid or mixtures thereof.
Inventors
- 👤 Peter Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:10
CPC Classifications
A; A23; A23K; A23K30/00; A23K30/10; A23K30/15; A23K10/00; A23K10/30; A23K10/33; A23K10/40; A23K20/00; A23K20/10; A23K20/20; A23K40/00; A23K40/20; A23K50/00; A23K50/30; Y; Y02; Y02P; Y02P60/00; Y02P60/80; Y02P60/87; Y10; Y10S; Y10S426/00; Y10S426/807
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
An animal feed supplement composition suitable for animal feedstuffs, animal feed additives, and animal mineral supplements comprising a nitrogen-containing active ingredient selected from the group consisting of urea, urea-phosphate and mixtures thereof and a phosphorus-containing active ingredient selected from the group consisting of phosphoric acid, urea-phosphate and mixtures thereof, in admixture with a thixotropic agent of a copolymer of methylvinyl ether and maleic anhydride, said thixotropic agent being present in an amount such that, in the presence of added water and molasses the composition forms a pseudoplastic thixotropic gel having a viscosity in excess of 10 poise and containing between 0.2 and 3% of the said thixotropic agent by weight of the gel.
Claim 2
Dependent Claim
113 words
An animal feed supplement composition suitable for animal feedstuffs, animal feed additives, and animal mineral supplements comprising a nitrogen-containing active ingredient selected from the group consisting of urea, urea-phosphate and mixtures thereof and a phosphorus-containing active ingredient selected from the group consisting of phosphoric acid, urea-phosphate and mixtures thereof, in admixture with a thixotropic agent of a copolymer of methylvinyl ether and maleic anhydride, said thixotropic agent being present in an amount such that, in the presence of added water and molasses the composition forms a pseudoplastic thixotropic gel having a viscosity in excess of 10 poise and containing between 0.2 and 3% of the said thixotropic agent by weight of the gel.
Claim 3
Dependent Claim
26 words
A composition as claimed in claim 1, comprising the nitrogen containing active ingredient in the form of a dry solid premixed with the dry thixotropic agent.
Claim 4
Dependent Claim
27 words
A composition as claimed in claim 1, comprising both active ingredients in the form of a concentrated solution, dispersion, emulsion or suspension premixed with the thixotropic agent.
Claim 5
Dependent Claim
15 words
A composition as claimed in claim 1 which is rendered free-flowing by shaking or pressure.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |