Patent US3666474A successfully refreshed from Google Patents.
US3666474A
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US
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Solvent soluble diazonium metal salts and diazotype material therefor
Assignee: GAF Corp
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Filing: 1968-09-11
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Granted: 1972-05-30
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Expires: 1988-09-11
Abstract
Abstract LIGHT SENSITIVE DIAZONIUM HEXAFLUOROARSENATE AND HEXAFLUOROANTIMONATE SALTS WHICH ARE EMPLOYED IN THE PREPARATION OF DIAZO FORMULATIONS FOR THE SENSITIZATION OF BASE MATERIALS.
Inventors
- 👤 Ralph G D Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:00
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |