US2727833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capsule finishing process
Assignee: Wyeth Holdings LLC
•
Filing: 1950-11-03
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Granted: 1955-12-20
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Yen Ernest Chu
- 👤 Stirn Frank Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/4891; Y; Y10; Y10S; Y10S264/00; Y10S264/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE PROCESS WHICH COMPRISES WASHING AND COATING SOFT GELATIN CAPSULES WITH A LIQUID COATING COMPOSITION, HAVING SUCH A DENSITY THAT PROPERLY FILLED CAPSULES SINK THEREIN, COMPRISING AN AT LEAST PARTIALLY WATER SOLUBLE, VOLATILE, ORGANIC SOLVENT, FROM 1/2 TO 10% OF A LOWER ALDEHYDE SOLUBLE IN SAID SOLVENT AS A GELATIN HARDENER, FROM 1/4 TO 5% OF AN AIR DRYING RESIN SOLUBLE IN SAID SOLVENT TO PROVIDE A COATING, AND A FLAVOR SOLUBLE IN SAID SOLVENT, SUFFICIENT SUCH COMPOSITION BEING PRESENT TO MORE THAN COVER THE CAPSULES, SEPARATING FLOATING CAPSULES, REMOVING THE EXCESS LIQUID COATING COMPOSITION, AND DRYING THE COATED CAPSULES.
Claim 2
Dependent Claim
100 words
THE PROCESS WHICH COMPRISES WASHING AND COATING SOFT GELATIN CAPSULES WITH A LIQUID COATING COMPOSITION, HAVING SUCH A DENSITY THAT PROPERLY FILLED CAPSULES SINK THEREIN, COMPRISING AN AT LEAST PARTIALLY WATER SOLUBLE, VOLATILE, ORGANIC SOLVENT, FROM 1/2 TO 10% OF A LOWER ALDEHYDE SOLUBLE IN SAID SOLVENT AS A GELATIN HARDENER, FROM 1/4 TO 5% OF AN AIR DRYING RESIN SOLUBLE IN SAID SOLVENT TO PROVIDE A COATING, AND A FLAVOR SOLUBLE IN SAID SOLVENT, SUFFICIENT SUCH COMPOSITION BEING PRESENT TO MORE THAN COVER THE CAPSULES, SEPARATING FLOATING CAPSULES, REMOVING THE EXCESS LIQUID COATING COMPOSITION, AND DRYING THE COATED CAPSULES.
References Cited (Backward Citations)
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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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |