US3022218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotics in feeds
Assignee: Pfizer Inc
•
Filing: 1961-01-31
•
Granted: 1962-02-20
•
Expires: 1981-01-31
Abstract
No abstract record available.
Inventors
- 👤 William C Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:46
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ANIMAL FEED COMPOSITION COMPRISING A THERAPEUTICALLY-EFFECTIVE AMOUNT OF A TETRACYCLINE-TYPE ANTIBIOTIC AND A NUTRITIONALLY-BALANCED ANIMAL FEED CONTAINING A SOURCE OF CALCIUM WHEREIN NO MORE THAN ABOUT 0.5% BY WEIGHT OF THE CALCIUM IS PRESENT IN A FORM OTHER THAN CALCIUM SILICATE AND THE WEIGHT RATIO OF THE CALCIUM SILICATE TO CALCIUM X IS AT LEAST ABOUT 3:1, X BEING AN ANION OTHER THAN SILICATE.
Claim 2
Dependent Claim
65 words
AN ANIMAL FEED COMPOSITION COMPRISING A THERAPEUTICALLY-EFFECTIVE AMOUNT OF A TETRACYCLINE-TYPE ANTIBIOTIC AND A NUTRITIONALLY-BALANCED ANIMAL FEED CONTAINING A SOURCE OF CALCIUM WHEREIN NO MORE THAN ABOUT 0.5% BY WEIGHT OF THE CALCIUM IS PRESENT IN A FORM OTHER THAN CALCIUM SILICATE AND THE WEIGHT RATIO OF THE CALCIUM SILICATE TO CALCIUM X IS AT LEAST ABOUT 3:1, X BEING AN ANION OTHER THAN SILICATE.
References Cited (Backward Citations)
US2962378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |