Patent US3743504A successfully refreshed from Google Patents.
US3743504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer scavengers for image transfer systems
Assignee: Eastman Kodak Co
•
Filing: 1971-05-28
•
Granted: 1973-07-03
•
Expires: 1991-05-28
Abstract
Abstract A DEVELOPER SCAVENGER LAYER COMPRISING AN ALDEHYDEBISULFITE ADDITION PRODUCT AND A POLYMERIC BINDER IS USEFUL FOR REDUCING BACKGROUND STAIN IN A DYE IMAGE-RECEIVING ELEMENT OF A COLOR DIFFUSION TRANSFER SYSTEM UTILIZING IMMOBILE COUPLERS WHICH FORM DIFFUSIBLE DYES.
Inventors
- 👤 G Dappen
- 👤 D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:21
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |