Patent US3175980A successfully refreshed from Google Patents.
US3175980A
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Compositions of matter of improved appearance in daylight, containing a 3.5-diaminopyrazine-2.6-dicarboxylic acid derivative
Assignee: Novartis AG
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Filing: 1961-11-16
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Granted: 1965-03-30
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Expires: 1981-11-16
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
2026-11-01 05:31
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; 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
49 words
A COMPOSITION OF MATTER OF IMPROVAL APPEARANCE IN DAYLIGHT CONSISTING ESSENTIALLY OF AN UNCOLOURED CARRIER SELECTED FROM THE GROUP CONSISTING OF SYNTHETIC POLYPEPTIDES, NATURAL POLYPEPTIDES, VINYL POLYMERS AND CELLULOSE ACETATES, CONTAINING FROM 0.001 TO 0.5% BY WEIGHT, OF THE COMPOSITION, OF A 3.5-DIAMINO-PYRAZINE 2.6-DICARBOXYLIC ACID AMIDE OF THE FORMULA:
Claim 2
Dependent Claim
49 words
A COMPOSITION OF MATTER OF IMPROVAL APPEARANCE IN DAYLIGHT CONSISTING ESSENTIALLY OF AN UNCOLOURED CARRIER SELECTED FROM THE GROUP CONSISTING OF SYNTHETIC POLYPEPTIDES, NATURAL POLYPEPTIDES, VINYL POLYMERS AND CELLULOSE ACETATES, CONTAINING FROM 0.001 TO 0.5% BY WEIGHT, OF THE COMPOSITION, OF A 3.5-DIAMINO-PYRAZINE 2.6-DICARBOXYLIC ACID AMIDE OF THE FORMULA:
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |