US3201315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3. 5-diaminopyrazine-2. 6-dicarboxylic acid derivatives as optical brightening agents in cosmetic fatty creams
Assignee: Novartis AG
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Filing: 1962-01-15
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Granted: 1965-08-17
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Daglish Anthony Fenwick
- 👤 Vonderwahl Rodolphe
- 👤 Tillotson George Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:00
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61Q; A61Q19/00; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; A61K2800/434; A61Q1/00; A61Q1/02; A61Q1/04; A61Q1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPOSITION OF MATTER OF IMPROVED APPEARANCE IN DAYLIGHT CONSISTING OF A COSMETIC FATTY CREAM AND FROM 0.001 TO 0.5% BY WEIGHT OF A 3.5-DIAMINO-PYRAZINE 2.6DICARBOXYLIC ACID AMIDE OF THE FORMULA
Claim 2
Dependent Claim
31 words
A COMPOSITION OF MATTER OF IMPROVED APPEARANCE IN DAYLIGHT CONSISTING OF A COSMETIC FATTY CREAM AND FROM 0.001 TO 0.5% BY WEIGHT OF A 3.5-DIAMINO-PYRAZINE 2.6DICARBOXYLIC ACID AMIDE OF THE FORMULA
References Cited (Backward Citations)
US2581889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |