US2855304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous aurin cyanide solutions and sensitizing process
Assignee: Individual
•
Filing: 1957-05-14
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Granted: 1958-10-07
•
Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Chalkley Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A COMPOSITION FOR THE PREPARATION OF PHOTOSENSITIVE MATERIALS, COMPRISING: AN AQUEOUS AMMONIA SOLUTION CONTAINING AURIN CYANIDE DISSOLVED THEREIN.
Claim 2
Dependent Claim
18 words
A COMPOSITION FOR THE PREPARATION OF PHOTOSENSITIVE MATERIALS, COMPRISING: AN AQUEOUS AMMONIA SOLUTION CONTAINING AURIN CYANIDE DISSOLVED THEREIN.
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |