US3729314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic processes and products
Assignee: Polaroid Corp
•
Filing: 1969-12-18
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Granted: 1973-04-24
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Expires: 1989-12-18
Abstract
Abstract A NOVEL IMAGE FORMING SYSTEM COMPRISING GORMING AN IMAGEWISE DISTRIBUTION OF A MORDANT IN THE DEVELOPED AREAS OF AN EXPOSED PHOTOSENSITIVE LAYER, MORDANTING DYE IN SAID AREAS, AND FORMING A REVERSE IMAGE IN TERMS OF DYE TRANSFERRED BY DIFFUSION FROM UNDEVELOPED AREAS OF THE PHOTOSENSITIVE LAYER TO AN IMAGE-RECEIVING LAYER.
Inventors
- 👤 H Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:07
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D215/00; C07D215/02; C07D215/04; C07D215/10; G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 0
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |