Patent US3386828A successfully refreshed from Google Patents.
US3386828A
Expired / Lapsed
US
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Diazo sensitizing formulations containing a xanthine and an imidazoledione
Assignee: GAF Chemicals Corp
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Filing: 1965-10-19
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Granted: 1968-06-04
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Chester E Slimowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:21
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A TWO-COMPONENT LIGHJT-SENSITIVE DIAZO COMPOSITION COMPRISING A COMPATIBLE AQUEOUS SOLUTION OF A LIGHTSENSITIVE DIAZO COMPOUND AND A COUPLING COMPONENT, SAID SOLUTION FURTHER CONTAINING AS ESSENTIAL INGREDIENTS (A) A XANTHINE COMPOUND AND (B) AN IMIDAZOLEDIONE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
38 words
A TWO-COMPONENT LIGHJT-SENSITIVE DIAZO COMPOSITION COMPRISING A COMPATIBLE AQUEOUS SOLUTION OF A LIGHTSENSITIVE DIAZO COMPOUND AND A COUPLING COMPONENT, SAID SOLUTION FURTHER CONTAINING AS ESSENTIAL INGREDIENTS (A) A XANTHINE COMPOUND AND (B) AN IMIDAZOLEDIONE COMPOUND 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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |