Patent US3293132A successfully refreshed from Google Patents.
US3293132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray dried vitamin compositions and method of preparation
Assignee: Merck and Co Inc
•
Filing: 1963-03-25
•
Granted: 1966-12-20
•
Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Lewis E Stoyle
- 👤 Edward J Hanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A SPRAY DRIED POWDER HAVING FREE-FLOWING PROPERTIES AND WHICH IS DIRECTLY COMPRESSIBLE INTO TABLETS, COMPRISING FROM 75 TO 95 PARTS BY WEIGHT OF ASCORBIC ACID, FROM 5 TO 25 PARTS BY WEIGHT OF A CARBOHYDRATE, AND FROM 0.5 TO 6 PARTS BY WEIGHT OF FILM-PRODUCING HYDROPHYLIC ORGANIC COLLOIDAL MATERIAL.
Claim 2
Dependent Claim
49 words
A SPRAY DRIED POWDER HAVING FREE-FLOWING PROPERTIES AND WHICH IS DIRECTLY COMPRESSIBLE INTO TABLETS, COMPRISING FROM 75 TO 95 PARTS BY WEIGHT OF ASCORBIC ACID, FROM 5 TO 25 PARTS BY WEIGHT OF A CARBOHYDRATE, AND FROM 0.5 TO 6 PARTS BY WEIGHT OF FILM-PRODUCING HYDROPHYLIC ORGANIC COLLOIDAL MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |