US3954989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Topical compositions containing an allantoin ascorbic acid complex
Assignee: INDUSTRIAL NATIONAL BANK OF RHODE ISLAND A NATIONAL BANKING ASSOCIATION
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Filing: 1975-02-10
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Granted: 1976-05-04
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Expires: 1995-02-10
Abstract
Abstract An allantoin ascorbic acid complex is disclosed as is an allantoin salt ascorbic acid complex. Medicinal and cosmetic compositions containing these complexes are also disclosed.
Inventors
- 👤 Sebastian B. Mecca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:53
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/62; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4946; A61K8/67; A61K8/676; A61Q; A61Q19/00; C07D233/00; C07D233/54; C07D233/66; C07D233/88; A61K2800/00; A61K2800/40; A61K2800/52; A61K2800/70; A61K2800/72; A61Q15/00; A61Q19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A pharmaceutical composition useful for topical application comprising from about 0.5 to about 1%, by weight, based on the weight of the composition, of an allantoin ascorbic acid complex and a pharmaceutically acceptable carrier, said complex being formed by combining allantoin and ascorbic acid in a mol ratio of about 1 to 1.
Claim 2
Dependent Claim
53 words
A pharmaceutical composition useful for topical application comprising from about 0.5 to about 1%, by weight, based on the weight of the composition, of an allantoin ascorbic acid complex and a pharmaceutically acceptable carrier, said complex being formed by combining allantoin and ascorbic acid in a mol ratio of about 1 to 1.
References Cited (Backward Citations)
US2376884A
Cited
US2761867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |