US3145146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified mannitol for pharmaceutical tablets
Assignee: Warner Lambert Co LLC
•
Filing: 1961-10-31
•
Granted: 1964-08-18
•
Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Lieberman
- 👤 Daniel J Maher
- 👤 Morton W Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:01
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2013; A61K9/2018
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE METHOD OF FORMING MANNITOL INTO TABLET BINDER PARTICLES HAVING AN AVERAGE DIAMETER OF FROM 5 TO 150 MICRONS FOR SUBSEQUENT COMPRESSION TABLETING IN COMBINATION WITH A MEDICAMENT, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF THE STEPS OF FORMING A SOLUTION OF MANNITOL, SPRAY-DRYING SAID SOLUTION OF MANNITOL IN THE FORM OF FINELY DIVIDED PARTICLES INTO A STREAM OF HEATED INERT GAS, AND SEPARATING THE DRY MANNITOL PARTICLES.
Claim 2
Dependent Claim
68 words
IN THE METHOD OF FORMING MANNITOL INTO TABLET BINDER PARTICLES HAVING AN AVERAGE DIAMETER OF FROM 5 TO 150 MICRONS FOR SUBSEQUENT COMPRESSION TABLETING IN COMBINATION WITH A MEDICAMENT, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF THE STEPS OF FORMING A SOLUTION OF MANNITOL, SPRAY-DRYING SAID SOLUTION OF MANNITOL IN THE FORM OF FINELY DIVIDED PARTICLES INTO A STREAM OF HEATED INERT GAS, AND SEPARATING THE DRY MANNITOL PARTICLES.
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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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |