US2432506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of developed silver images with mercapto-tetrazole and triazole compounds
Assignee: Ilford Imaging UK Ltd
•
Filing: 1944-10-11
•
Granted: 1947-12-16
•
Expires: 1964-10-11
Abstract
No abstract record available.
Inventors
- 👤 Chilton Leonard Vincent
- 👤 Kendall John David
- 👤 Phillips Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:15
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/268; G03C5/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR43889E
Cited
US2066099A
Cited
GB421636A
Cited
US2124159A
Cited
FR791938A
Cited
US2308023A
Cited
US2346065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |