Patent US3832462A successfully refreshed from Google Patents.
US3832462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic av290-syntan complexes and animal feed supplements
Assignee: Wyeth Holdings LLC
•
Filing: 1972-04-11
•
Granted: 1974-08-27
•
Expires: 1992-04-11
Abstract
Abstract This disclosure describes a reversible complex of antibiotic AV290 with a synthetic tanning agent and a process for preparing same. The complex is useful as an animal feed supplement which significantly enhances the growth rate of animals and poultry.
Inventors
- 👤 P Shu
- 👤 M Dann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:09
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; A; A23; A23K; A23K20/00; A23K20/10; A23K20/195; C08G8/04; C08G8/08; C08G8/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
A dry complex of a syntan with antibiotic AV290 prepared in accordance with the process of claim 1.
Claim 2
Dependent Claim
66 words
A process for the production of a dried fermentation harvest mash solids animal feed supplement containing an antibiotic AV290-syntan complex which comprises the steps of: a. acidifying a fermentation whole harvest mash containing antibiotic AV290 to a pH of from 1.4 to 5.0 with a pharmacologically acceptable acid; b. adding to the acidified mash a syntan complexing agent comprising a mixture of compounds of the formula:
Claim 3
Dependent Claim
26 words
An animal feed supplement of a dry mixture of fermentation harvest mash solids and antibiotic AV290-syntan complex prepared in accordance with the process of claim 3.
Claim 4
Dependent Claim
35 words
An animal feed composition which comprises a nutritionally balanced animal feed and an effective amount for accelerating the growth rate of animals of antibiotic AV290-syntan complex prepared in accordance with the process of claim 1.
References Cited (Backward Citations)
US3338786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |