US3857939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chewable sodium-free vitamin c tablets
Assignee: F Hoffmann La Roche AG
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Filing: 1973-11-28
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Granted: 1974-12-31
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Expires: 1993-11-28
Abstract
Abstract Chewable tablets containing ascorbic acid which are acceptable in taste and physical characteristics such as size and free of sodium ions are provided. The tablets of the invention contain ascorbic acid in combination with magnesium hydroxide, magnesium oxide or mixtures thereof.
Inventors
- 👤 J Green
- 👤 L Magid
- 👤 P Sleezer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:07
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0056; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375; A61K9/20; A61K9/2004; A61K9/2009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A CHEWABLE VITAMIN C TABLET HAVING IMPROVED PALATABILITY CHARACTERITICS CONSISTING ESSENTIALLY OF FROM ABOUT 50MG. TO ABOUT 500 MG ASCORBIC ACID, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM HYDRIXIDE, MAGNESIUM OXIDE AND MIXTURES THEREOF, SAID SUBSTANCE BEING PRESENT IN FROM ABOUT 10 PER CENT TO ABOUT 20 PER CENT BY WEIGHT OF ASCORBIC ACID PRESENT AND THERAPEUTICALLY INERT, PHARMACEUTICALLY ACCEPTABLE EXPIPIENTS, SAID EXCIPIENTS BEING CHARACTERIZED BY BEING FREE OF SODIUM IONS.
Claim 2
Dependent Claim
73 words
A CHEWABLE VITAMIN C TABLET HAVING IMPROVED PALATABILITY CHARACTERITICS CONSISTING ESSENTIALLY OF FROM ABOUT 50MG. TO ABOUT 500 MG ASCORBIC ACID, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM HYDRIXIDE, MAGNESIUM OXIDE AND MIXTURES THEREOF, SAID SUBSTANCE BEING PRESENT IN FROM ABOUT 10 PER CENT TO ABOUT 20 PER CENT BY WEIGHT OF ASCORBIC ACID PRESENT AND THERAPEUTICALLY INERT, PHARMACEUTICALLY ACCEPTABLE EXPIPIENTS, SAID EXCIPIENTS BEING CHARACTERIZED BY BEING FREE OF SODIUM IONS.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |