Patent US4212890A successfully refreshed from Google Patents.
US4212890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of pellets from feed meals
Assignee: BASF SE
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Filing: 1978-06-28
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Granted: 1980-07-15
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Expires: 1998-06-28
Abstract
Abstract Feed pellets are produced by homogeneously mixing feed meals with from 0.1 to 2% of a pulverulent urea-formaldehyde resin obtained by spray-drying a glue solution, and pelletizing the mixture.
Inventors
- 👤 Hubert Tiefenbacher
- 👤 Friedrich Kraus
- 👤 Guenther Matthias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:52
CPC Classifications
A; A23; A23K; A23K40/00; A23K40/25; A23K40/20; A23K50/00; A23K50/10; A23K50/15; A23K50/30; Y; Y10; Y10S; Y10S426/00; Y10S426/807
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A process for the manufacture of pellets of feed meals, comprising: mixing feed meals, which have not been pretreated with urea, homogeneously with from 0.1 to 2% by weight of a pulverulent urea-formaldehyde resin obtaned by spray-drying a urea-formaldehyde solution said urea-formaldehyde resin having a molar ratio of urea to formaldehyde of from 1:1.6 to 1:2 and having a free formaldehyde content from 1 to 4% by weight with reference to the urea-formaldehyde resin, said free formaldehyde being included in said molar ratio, and without further addition of urea pelletizing the mixture.
Claim 2
Dependent Claim
92 words
A process for the manufacture of pellets of feed meals, comprising: mixing feed meals, which have not been pretreated with urea, homogeneously with from 0.1 to 2% by weight of a pulverulent urea-formaldehyde resin obtaned by spray-drying a urea-formaldehyde solution said urea-formaldehyde resin having a molar ratio of urea to formaldehyde of from 1:1.6 to 1:2 and having a free formaldehyde content from 1 to 4% by weight with reference to the urea-formaldehyde resin, said free formaldehyde being included in said molar ratio, and without further addition of urea pelletizing the mixture.
Claim 3
Dependent Claim
20 words
A process as claimed in claim 1, wherein from 0.15 to 1.5% by weight of the urea-formaldehyde resin is added.
Claim 4
Dependent Claim
16 words
A process as claimed in claim 1, wherein the feed meals are heated prior to pelletizing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |