Patent US4265916A successfully refreshed from Google Patents.
US4265916A
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Animal feed block containing ferrous sulfate and finely ground magnesium oxide
Assignee: Purina Mills LLC
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Filing: 1979-01-23
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Granted: 1981-05-05
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Expires: 1999-01-23
Abstract
Abstract An animal feed supplement in a solid, weather resistant block form and method of making is disclosed. The molasses based feed supplement block, intended for consumption primarily by ruminant animals, although not limited thereto, contains ferrous sulfate as a blocking agent. The feed supplement also comprises a water absorbent clay, a phosphorous source and finely ground magnesium oxide as well as an edible fat or oil in sufficient quantities to set into a solid block when admixed with the blocking agent. A preferred block composition is prepared by a method which comprises admixing the molasses, water, phosphate source and water absorbent clay under high speed shearing action for an effective amount of time to disperse the clay, admixing edible fat and dispersing it in the mixture and then admixing ferrous sulfate and finely ground magnesium oxide to obtain a nutrient mixture. The mixture is then poured into molds or packages and solidifies to form a hard block.
Inventors
- 👤 Leroy V. Skoch
- 👤 Bud G. Harmon
- 👤 Charles W. Dickerson
- 👤 Nelson S. Chou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:29
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/20; A23K20/30; A23K10/00; A23K10/30; A23K10/33; A23K10/40; A23K20/24; A23K20/26; A23K20/28; A23K40/00; A23K40/20; Y; Y02; Y02P; Y02P60/00; Y02P60/80; Y02P60/87; Y10; Y10S; Y10S426/00; Y10S426/807
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
82 words
A process for preparing a molasses based animal feed block which comprises admixing molasses, nutritive ingredients, about 5 to about 10% by weight of a phosphorous source, and water absorbent clay with about 2 to about 4% by weight ferrous sulfate and about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm under high speed shearing action to obtain a nutrient mixture that solidifies to form a hard, weather resistant block.
Claim 2
Dependent Claim
82 words
A process for preparing a molasses based animal feed block which comprises admixing molasses, nutritive ingredients, about 5 to about 10% by weight of a phosphorous source, and water absorbent clay with about 2 to about 4% by weight ferrous sulfate and about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm under high speed shearing action to obtain a nutrient mixture that solidifies to form a hard, weather resistant block.
Claim 3
Dependent Claim
95 words
A process for preparing a molasses based animal feed block which comprises admixing molasses, nutritive ingredients, from about 1 to about 10% by weight of a phosphorous source and water absorbent clay under high speed shearing action for an effective amount of time to disperse the clay, admixing fat, from about 2 to about 4% by weight ferrous sulfate and about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm to obtain a nutrient mixture that solidifies to form a hard weather resistant block.
Claim 4
Dependent Claim
95 words
A process for preparing a molasses based animal feed block which comprises admixing molasses, nutritive ingredients, from about 1 to about 10% by weight of a phosphorous source and water absorbent clay under high speed shearing action for an effective amount of time to disperse the clay, admixing fat, from about 2 to about 4% by weight ferrous sulfate and about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm to obtain a nutrient mixture that solidifies to form a hard weather resistant block.
Claim 5
Dependent Claim
22 words
The process of claim 2 wherein the finely ground magnesium oxide has a surface area of at least 20 m 2 /gm.
Claim 6
Dependent Claim
23 words
The process of claim 3 wherein the finely ground magnesium oxide has a reaction time of about 8 seconds to about 3 minutes.
Claim 7
Dependent Claim
11 words
The process of claim 2 wherein 4% magnesium oxide is present.
Claim 8
Dependent Claim
23 words
The process of claim 2 wherein about 4% by weight finely ground magnesium oxide and about 2% by weight ferrous sulfate is present.
Claim 9
Dependent Claim
24 words
The process of claim 2 wherein the phosphorous source is water soluble and selected from the group consisting of ammonium polyphosphate and tetrasodium pyrophosphate.
Claim 10
Dependent Claim
20 words
The process of claim 7 wherein ammonium polyphosphate is present in amounts ranging from about 5 to 10% by weight.
Claim 11
Dependent Claim
23 words
The process of claim 2 wherein the phosphorous source is tetrasodium pyrophosphate present in amounts ranging from about 1 to 5% by weight.
Claim 12
Dependent Claim
20 words
The process of claim 2 wherein the molar ratio of iron to phosphorous to magnesium ranges from 1:0.3:10 to 1:0.9:12.5.
Claim 13
Dependent Claim
105 words
A process for preparing an animal feed block which comprises mixing about 22 to about 65% by weight molasses, about 5 to about 10% by weight of a phosphorous source and about 0.5 to about 5% by weight water absorbent clay under high speed shearing action for an effective amount of time to disperse the clay, admixing fat, from about 2 to about 4% by weight ferrous sulfate and from about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm to obtain a nutrient mixture that solidifies to form a hard, weather resistant block.
Claim 14
Dependent Claim
105 words
A process for preparing an animal feed block which comprises mixing about 22 to about 65% by weight molasses, about 5 to about 10% by weight of a phosphorous source and about 0.5 to about 5% by weight water absorbent clay under high speed shearing action for an effective amount of time to disperse the clay, admixing fat, from about 2 to about 4% by weight ferrous sulfate and from about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm to obtain a nutrient mixture that solidifies to form a hard, weather resistant block.
Claim 15
Dependent Claim
22 words
The process of claim 11 wherein the finely ground magnesium oxide has a surface area of at least 20 m 2 gm.
Claim 16
Dependent Claim
23 words
The process of claim 11 wherein the reaction time of the finely ground magnesium oxide is about 15 seconds to about 3 minutes.
Claim 17
Dependent Claim
17 words
The process of claim 11 wherein about 4% by weight magnesium oxide is present in the mixture.
Claim 18
Dependent Claim
17 words
The process of claim 11 wherein about 2% by weight ferrous sulfate is present in the mixture.
Claim 19
Dependent Claim
23 words
The process of claim 11 which includes an edible fat source in an amount of from about 5 to about 30% by weight.
Claim 20
Dependent Claim
12 words
The process of claim 11 wherein the phosphorous source is ammonium polyphosphate.
Claim 21
Dependent Claim
19 words
The process of claim 11 wherein about 0 to about 25% supplemental nutritive ingredients are present in the mixture.
Claim 22
Dependent Claim
17 words
The process of claim 11 wherein the particles of magnesium oxide pass through a 200 mesh screen.
Claim 23
Dependent Claim
68 words
A molasses based animal feed block comprising a mixture of molasses, nutritive ingredients, about 1 to about 10% by weight of a phosphorous source and water absorbent clay, with about 2 to about 4% by weight ferrous sulfate and about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm, said block being solid, weather resistant and palatable.
Claim 24
Dependent Claim
68 words
A molasses based animal feed block comprising a mixture of molasses, nutritive ingredients, about 1 to about 10% by weight of a phosphorous source and water absorbent clay, with about 2 to about 4% by weight ferrous sulfate and about 3.5 to about 15% by weight finely ground magnesium oxide having a surface area greater than 11 m 2 /gm, said block being solid, weather resistant and palatable.
Claim 25
Dependent Claim
19 words
The composition of claim 20 wherein magnesium oxide has a surface area of at least 20 m 2 /gm.
Claim 26
Dependent Claim
21 words
The composition of claim 20 wherein the magnesium oxide has a reaction time of about 8 seconds to about 3 minutes.
Claim 27
Dependent Claim
19 words
The composition of claim 20 wherein the magnesium oxide is present in the amount of about 4% by weight.
Claim 28
Dependent Claim
19 words
The composition of claim 20 wherein the ferrous sulate is present in the amount of about 2% by weight.
Claim 29
Dependent Claim
14 words
The composition of claim 20 wherein the water activity ranges from 0.80 to 0.90.
Claim 30
Dependent Claim
17 words
The composition of claim 20 wherein the particles of magnesium oxide pass through a 200 mesh screen.
Claim 31
Dependent Claim
20 words
The composition of claim 20 containing a phosphorous source selected from the group consisting of ammonium polyphosphate and tetrasodium pyrophosphate.
Claim 32
Dependent Claim
21 words
The composition of claim 20 wherein ammonium polyphosphate is present in amounts ranging from about 5 to about 10% by weight.
Claim 33
Dependent Claim
21 words
The composition of claim 20 wherein tetrasodium pyrophosphate is present in amounts ranging from about 1 to about 5% by weight.
Claim 34
Dependent Claim
23 words
The composition of claim 20 wherein the molar concentration of iron to phosphorous to magnesium is expressed as the ratio 1:0.3:10 to 1:0.9:12.5.
Claim 35
Dependent Claim
74 words
An animal feed block comprising about 22 to 65% by weight molasses, about 3.5 to about 15% by weight finely ground magnesium oxide, having a surface area greater than 11 m 2 /gm, about 2 to about 4% by weight ferrous sulfate, about 0.5 to 5% water absorbent clay, about 5 to 10% by weight phosphorous source, water and about 5 to about 30% fat source; said block being solid, weather resistant and palatable.
Claim 36
Dependent Claim
74 words
An animal feed block comprising about 22 to 65% by weight molasses, about 3.5 to about 15% by weight finely ground magnesium oxide, having a surface area greater than 11 m 2 /gm, about 2 to about 4% by weight ferrous sulfate, about 0.5 to 5% water absorbent clay, about 5 to 10% by weight phosphorous source, water and about 5 to about 30% fat source; said block being solid, weather resistant and palatable.
Claim 37
Dependent Claim
22 words
The composition of claim 31 wherein the finely ground magnesium oxide has a surface area of at least 20 m 2 /gm.
Claim 38
Dependent Claim
21 words
The composition of claim 31 wherein the magnesium oxide has a reaction time of about 8 seconds to about 3 minutes.
Claim 39
Dependent Claim
15 words
The composition of claim 31 wherein the water activity ranges from about 0.80 to 0.90.
Claim 40
Dependent Claim
17 words
The composition of claim 31 wherein the particles of magnesium oxide pass through a 200 mesh screen.
Claim 41
Dependent Claim
19 words
The composition of claim 31 wherein about 4% finely ground magnesium oxide and about 2% ferrous sulfate is present.
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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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |