US3846558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for converting animal waste products into a food supplement
Assignee: INT FARM SYST INC US
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Filing: 1970-12-22
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Granted: 1974-11-05
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Expires: 1990-12-22
Abstract
Abstract An animal feeding process wherein animal waste products are collected and fed to a storage vat and combined with a small quantity of a yeast culture and the combination of these products are aerated and agitated. The yeast culture in the presence of oxygen consumes the nutrients in the waste products and converts the waste products into a high protein animal feed supplement. This yeast product is then removed and added to the animal''s feed i.e., ground corn, bean meal and the like.
Inventors
- 👤 R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/001; A23J1/002; A23K; A23K10/00; A23K10/10; A23K10/12; A23K10/20; A23K10/26; A23L; A23L5/00; A23L5/20; A23L5/28; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; C; C12; C12M; C12M27/00; C12M27/02; C12M27/04; C12M27/06; B01F23/2336; B01F23/23364; B01F23/233642; Y; Y10; Y10S; Y10S435/00; Y10S435/804
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
120 words
A METHOD OF INCREASING THE WEIGHT OF A GROUP OF SWINE WHICH COMPRISES: FORMING A SLURRY OF SOLID AND LIQUID WASTE PRODUCTS OF SAID SWINE AND A YEAST CAPABLE OF ASSIMILATING NITROGEN FROM UREA, SAID SLURRY CONTAINING FROM 1 TO 25 PERCENT OF SAID SOLID WASTE; AERATING AND AGITATING SAID SLURRY WHILE MAINTAINING ITS TEMPERATURE AT ABOUT 775* TO 95*F AND ITS PH AT ABOUT 4 TO 6.5 FOR A PERIOD OF TIME SUFFICIENT TO EFFECTUATE A FERMENTATION PROCESS AND WHICH PRODUCES A SWINE FEED SUPPLEMENT BY CONVERTING THE NITROGEN IN SAID WASTE TO A HIGH PROTEIN PRODUCT CONTAINING INCREASED AMINO ACIDS IN AN AMOUNT OVER THAT IN THE RAW PRODUCT AND FEEDING SAID SWINE FEED SUPPLEMENT OF SAID SWINE.
Claim 2
Independent Claim
120 words
A METHOD OF INCREASING THE WEIGHT OF A GROUP OF SWINE WHICH COMPRISES: FORMING A SLURRY OF SOLID AND LIQUID WASTE PRODUCTS OF SAID SWINE AND A YEAST CAPABLE OF ASSIMILATING NITROGEN FROM UREA, SAID SLURRY CONTAINING FROM 1 TO 25 PERCENT OF SAID SOLID WASTE; AERATING AND AGITATING SAID SLURRY WHILE MAINTAINING ITS TEMPERATURE AT ABOUT 775* TO 95*F AND ITS PH AT ABOUT 4 TO 6.5 FOR A PERIOD OF TIME SUFFICIENT TO EFFECTUATE A FERMENTATION PROCESS AND WHICH PRODUCES A SWINE FEED SUPPLEMENT BY CONVERTING THE NITROGEN IN SAID WASTE TO A HIGH PROTEIN PRODUCT CONTAINING INCREASED AMINO ACIDS IN AN AMOUNT OVER THAT IN THE RAW PRODUCT AND FEEDING SAID SWINE FEED SUPPLEMENT OF SAID SWINE.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein phosphoric acid is added to said slurry to maintain said pH.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein a portion of said product of the fermentation is periodically withdrawn from said vessel and a similar amount of said waste product is added to said vessel.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein said slurry contains approximately 13 percent solids by weight.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein said swine feed supplement contains approximately the same solids content as said slurry.
Claim 7
Dependent Claim
23 words
The method of claim 1 wherein said feRmentation process is initiated by the addition of yeast and a sugar to said waste products.
Claim 8
Dependent Claim
11 words
The method of claim 6 wherein said yeasta is Candida utilis.
Claim 9
Independent Claim
115 words
A method of increasing the weight of a group of swine and disposing of their waste products which comprises: forming an aqueous slurry of the solid and liquid excrement from said swine, said slurry containing a yeast product; and said slurry containing from about 1 to 25 percent of said solid excrement; aerating said slurry while maintaining its temperature at about 75* to 95*F and its pH at about 4 to 6.5 until the percentage of protein in the excrement slurry has increased and the urea content thereof has been substantially eliminated to thereby form a swine feed supplement; mixing said swine feed supplement with conventional swine rations and, feeding said mixture to said swine.
Claim 10
Independent Claim
115 words
A method of increasing the weight of a group of swine and disposing of their waste products which comprises: forming an aqueous slurry of the solid and liquid excrement from said swine, said slurry containing a yeast product; and said slurry containing from about 1 to 25 percent of said solid excrement; aerating said slurry while maintaining its temperature at about 75* to 95*F and its pH at about 4 to 6.5 until the percentage of protein in the excrement slurry has increased and the urea content thereof has been substantially eliminated to thereby form a swine feed supplement; mixing said swine feed supplement with conventional swine rations and, feeding said mixture to said swine.
Claim 11
Dependent Claim
15 words
The method of claim 8 wherein the conventional swine rations comprise corn and soy bean.
Claim 12
Dependent Claim
19 words
The method of claim 8 wherein phosphoric acid is added to the slurry to maintain it at said pH.
Claim 13
Dependent Claim
39 words
The method of claim 8 wherein said process is carried out in a vessel, a portion of said treated slurry is periodically withdrawn from said vessel and a similar amount of said waste product is added to said vessel.
Claim 14
Dependent Claim
38 words
The method of claim 8 wherein the step of aerating said slurry comprises dispersing pressurized oxygen-bearing gas in said slurry and breaking up said gas into bubblets thereby to maintain said gas bubblets in solution in the slurry.
Claim 15
Dependent Claim
26 words
The method of claim 8 wherein the conversion of the swine waste is initiated by the addition of yeast and a sugar to said aqueous slurry.
Claim 16
Dependent Claim
11 words
The method of claim 13 wherein said yeast is Candida utilis.
Claim 17
Independent Claim
87 words
A method comprising the steps of forming an aqueous slurry of solid and liquid swine excreta, said slurry containing from about 1 to 25 percent of said solid excreta, said slurry containing a yeast product, aerating said slurry while maintaining it at a temperature of about 75* to 95*F and at a pH of about 4 to 6.5 until the urea content of said swine excreta slurry has been substantially eliminated thereby forming a swine feed supplement, and feeding the swine feed supplement obtained thereby to swine.
Claim 18
Independent Claim
87 words
A method comprising the steps of forming an aqueous slurry of solid and liquid swine excreta, said slurry containing from about 1 to 25 percent of said solid excreta, said slurry containing a yeast product, aerating said slurry while maintaining it at a temperature of about 75* to 95*F and at a pH of about 4 to 6.5 until the urea content of said swine excreta slurry has been substantially eliminated thereby forming a swine feed supplement, and feeding the swine feed supplement obtained thereby to swine.
Claim 19
Dependent Claim
126 words
A continuous method for converting swine waste products into a swine feed supplement comprising the steps of (1) aerating an aqueous slurry of solid and liquid swine excreta in a vessel, said slurry containing from about 1 to 25 percent of said solid excreta and, said slurry containing a yeast product, while maintaining it at a temperature of about 75* to 95*F and its pH at about 4 to 6.5 until the urea content of said swine excreta has been substantially eliminated and (2) periodically removing a portion of said slurry from said vessel for use as a swine feed supplement and replacing each said portion with a similar amount of solid and liquid swine excreta in said vessel for treatment as described in step (1).
Claim 20
Dependent Claim
126 words
A continuous method for converting swine waste products into a swine feed supplement comprising the steps of (1) aerating an aqueous slurry of solid and liquid swine excreta in a vessel, said slurry containing from about 1 to 25 percent of said solid excreta and, said slurry containing a yeast product, while maintaining it at a temperature of about 75* to 95*F and its pH at about 4 to 6.5 until the urea content of said swine excreta has been substantially eliminated and (2) periodically removing a portion of said slurry from said vessel for use as a swine feed supplement and replacing each said portion with a similar amount of solid and liquid swine excreta in said vessel for treatment as described in step (1).
References Cited (Backward Citations)
CA558668A
Cited
US2528403A
Cited
GB802487A
Cited
US3375116A
Cited
US3503751A
Cited
US3546812A
Cited
US3580840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |