US2721161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ascorbic acid preparation
Assignee: Wyeth LLC
•
Filing: 1951-10-23
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Granted: 1955-10-18
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Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 Michael R Maiese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:20
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ASCORBIC ACID PREPARATION FOR ORAL THERAPY CONSISTING OF A HYDROPHOBE-FREE MIXTURE COMPRISING A VITAMIN AND A NON-TOXIC ORGANIC POLYMERIC NON-IONIC SURFACE-ACTIVE AGENT, SAID VITAMIN CONSISTING OF ASCORBIC ACID, THE CONCENTRATION OF ASCORBIC ACID BEING NOT LESS THAN 2 G. PER 100 ML. AND THE SURFACE-ACTIVE AGENT EXCEEDING THE ASCORBIC ACID IN AMOUNT.
Claim 2
Dependent Claim
53 words
AN ASCORBIC ACID PREPARATION FOR ORAL THERAPY CONSISTING OF A HYDROPHOBE-FREE MIXTURE COMPRISING A VITAMIN AND A NON-TOXIC ORGANIC POLYMERIC NON-IONIC SURFACE-ACTIVE AGENT, SAID VITAMIN CONSISTING OF ASCORBIC ACID, THE CONCENTRATION OF ASCORBIC ACID BEING NOT LESS THAN 2 G. PER 100 ML. AND THE SURFACE-ACTIVE AGENT EXCEEDING THE ASCORBIC ACID IN AMOUNT.
References Cited (Backward Citations)
US2292417A
Cited
US2417299A
Cited
US2407624A
Cited
US2541285A
Cited
US2524247A
Cited
US2583576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |