US2449153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver bromide emulsion sensitized with cysteine
Assignee: Individual
•
Filing: 1944-04-03
•
Granted: 1948-09-14
•
Expires: 1964-04-03
Abstract
No abstract record available.
Inventors
- 👤 Urbach Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US956567A
Cited
US1109514A
Cited
US1574944A
Cited
US1698448A
Cited
US1623499A
Cited
US1727866A
Cited
GB372637A
Cited
US1925508A
Cited
US2017853A
Cited
FR773294A
Cited
GB439812A
Cited
FR768015A
Cited
US2090607A
Cited
US2099297A
Cited
CH186864A
Cited
US2193011A
Cited
US2173628A
Cited
US2126319A
Cited
US2231127A
Cited
US2168971A
Cited
US2286662A
Cited
US2266441A
Cited
US2221805A
Cited
US2309492A
Cited
US2288226A
Cited
US2315966A
Cited
US2304962A
Cited
US2353754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |