Patent US2485122A successfully refreshed from Google Patents.
US2485122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype compositions containing nu-acylamino phenol couplers
Assignee: GAF Chemicals Corp
•
Filing: 1946-05-08
•
Granted: 1949-10-18
•
Expires: 1966-05-08
Abstract
No abstract record available.
Inventors
- 👤 Glahn William H Von
- 👤 Lester N Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB283274A
Cited
GB294972A
Cited
US1870930A
Cited
US2088328A
Cited
DE677685C
Cited
US2229200A
Cited
US2245628A
Cited
US2246425A
Cited
US2298444A
Cited
US2375366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |