US2861024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibiotic dusts
Assignee: Merck and Co Inc
•
Filing: 1957-11-12
•
Granted: 1958-11-18
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Leonard H Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ANTIBOITIC DUST USEFUL FOR COMBATING RESPIRATORY DISEASES IN ANIMALS, SAID DUST BEING IN THE FORM OF A FREE-FLOWING MASS OF FINE BEADLETS COMPRISING ANTIBIOTICS HAVING A PARTICLE SIZE BELOW ABOUT 20 MICRONS COATED WITH 0.5 TO 20% BY WEIGHT OF AN ESSENTIALLY INERT AND WATER INSOLUBLE COATING AGENT HAVING A PARTICLE SIZE LESS THAN 15 MICRONS, SAID COATING AGENT BEING AN ANTI-CAKING AGENT SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, WATER INSOLUBLE SOAPS, VEGETABLE FLOURS, AND WATER INSOLUBLE INORGANIC SALTS OF MAGNESIUM, AND THE SAID COATING AGENT FORMING A LOOSE BOND WITH SAID ANTIBIOTIC SUCH THAT THE BOND IS MECHANICALLY RUPTURABLE IN EJECTING SAID BEADLETS FROM A DUST GUN TO THEREBY DISPERSE A DUST IN WHICH THE ANTIBIOTIC PARTICLES APPROXIMATE THEIR ORIGINAL SIZE.
Claim 2
Dependent Claim
125 words
AN ANTIBOITIC DUST USEFUL FOR COMBATING RESPIRATORY DISEASES IN ANIMALS, SAID DUST BEING IN THE FORM OF A FREE-FLOWING MASS OF FINE BEADLETS COMPRISING ANTIBIOTICS HAVING A PARTICLE SIZE BELOW ABOUT 20 MICRONS COATED WITH 0.5 TO 20% BY WEIGHT OF AN ESSENTIALLY INERT AND WATER INSOLUBLE COATING AGENT HAVING A PARTICLE SIZE LESS THAN 15 MICRONS, SAID COATING AGENT BEING AN ANTI-CAKING AGENT SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, WATER INSOLUBLE SOAPS, VEGETABLE FLOURS, AND WATER INSOLUBLE INORGANIC SALTS OF MAGNESIUM, AND THE SAID COATING AGENT FORMING A LOOSE BOND WITH SAID ANTIBIOTIC SUCH THAT THE BOND IS MECHANICALLY RUPTURABLE IN EJECTING SAID BEADLETS FROM A DUST GUN TO THEREBY DISPERSE A DUST IN WHICH THE ANTIBIOTIC PARTICLES APPROXIMATE THEIR ORIGINAL SIZE.
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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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |