US2864753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanide of soluble blue and method of using same
Assignee: Individual
•
Filing: 1957-07-01
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Granted: 1958-12-16
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Chalkley Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:13
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732; Y; Y10; Y10S; Y10S204/00; Y10S204/901
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
A PROCESS FOR FORMING A COLORED COMPOUND COMPRISING IRRADIATING WITH ULTRAVIOLET ENERGY IN THE PRESENCE OF AN ACTIVATOR CONSISTING OF WATER, A DYE CYANIDE HAVING THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2441561A
Cited
US2676887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |