US3328256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical beads and their production
Assignee: Individual
•
Filing: 1963-05-27
•
Granted: 1967-06-27
•
Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 William E Gaunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; A61K9/1682; A61K9/1694; A61K9/1605; A61K9/1629; A61K9/1635; A61K9/1652
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF PRODUCING SMALL SPHERICAL BEADS OF SUBSTANTIALLY IDENTICAL AND PREDETERMINED SIZE AND COMPOSITION AND CONTAINING AT LEAST ONE ACTIVE INGREDIENT WHICH COMPRISES ALLOWING DROPS OF AT LEAST ONE SOLVENT SELECTED FROM THE GROUP CONSISTING OF SOLVENTS FOR THE POLYMER AND SOLVENTS FOR THE POLYMER AND ACTIVE INGREDIENT TO FALL ONTO A BED OF A FINELY DIVIDED SOLID POLYMER, SCREENING OUT THE SPHERICAL BEADS THUS FORMED AND DRYING THEM BY EVAPORATING THE SOLVENT, THERE BEING AT LEAST ONE ACTIVE INGREDIENT PRESENT IN AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF SOLVENT AND POLYMER BED.
Claim 2
Independent Claim
97 words
A METHOD OF PRODUCING SMALL SPHERICAL BEADS OF SUBSTANTIALLY IDENTICAL AND PREDETERMINED SIZE AND COMPOSITION AND CONTAINING AT LEAST ONE ACTIVE INGREDIENT WHICH COMPRISES ALLOWING DROPS OF AT LEAST ONE SOLVENT SELECTED FROM THE GROUP CONSISTING OF SOLVENTS FOR THE POLYMER AND SOLVENTS FOR THE POLYMER AND ACTIVE INGREDIENT TO FALL ONTO A BED OF A FINELY DIVIDED SOLID POLYMER, SCREENING OUT THE SPHERICAL BEADS THUS FORMED AND DRYING THEM BY EVAPORATING THE SOLVENT, THERE BEING AT LEAST ONE ACTIVE INGREDIENT PRESENT IN AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF SOLVENT AND POLYMER BED.
References Cited (Backward Citations)
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Cited
CA576690A
Cited
US2579944A
Cited
US2648609A
Cited
US2853420A
Cited
US2954323A
Cited
US3078216A
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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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |