US3597197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion transfer color process and element utilizing a processing composition comprising a coalescing latex dispersion
Assignee: Polaroid Corp
•
Filing: 1969-10-20
•
Granted: 1971-08-03
•
Expires: 1989-10-20
Abstract
Abstract THE PRESENT INVENTION RELATES TO A COMPOSITE PHOTOGRAPHIC DIFFUSION TRNASFER PROCESS COLOR FILM UNIT WHICH INCLUDES RUPTURABLE CONTAINER MEANS RETAINING PROCESSING COMPOSITION CONTAINING AN INSOLUBLE POLYMERIC DISPERSION ADAPTED UPON LOSS OF PROCESSING COMPOSITION SOLVENT TO COALESCE AT AMBIENT TEMPERATURES FOR DISTRIBUTION BETWEEN PHOTOSENSITIVE AND IMAGE RECEPTIVE ELEMENTS OF THE UNIT.
Inventors
- 👤 Terry W Milligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:15
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/44; G03C8/48
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |