US2428208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dichromate bleach bath containing a wetting agent and method of bleaching therewith
Assignee: Eastman Kodak Co
•
Filing: 1945-06-20
•
Granted: 1947-09-30
•
Expires: 1965-06-20
Abstract
No abstract record available.
Inventors
- 👤 Richard O Edgerton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:16
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42; G03C7/421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000353A
Cited
US1897866A
Cited
US2059887A
Cited
US2316782A
Cited
US2304940A
Cited
US2322027A
Cited
US2378265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |