US3782947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic product with photographically transparent magnetic recording medium
Assignee: Eastman Kodak Co
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Filing: 1972-01-28
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Granted: 1974-01-01
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Expires: 1992-01-28
Abstract
Abstract A PHOTOGRAPHIC PRODUCT CARRIES MAGNETICALLY SUSCEPTIBLE PARTICLES WHICH ARE UNIFORMLY DISTRIBUTED ACROSS (AT LEAST PART OF) THE IMAGE AREA OF THE PRODUCT. THE PARTICLE IDSTRIBUTION AND SIZE (S) ARE SO DESIGNED THAT THE COMPOSITE GRANULARITIES OF THE PHOTOGRAPHIC AND MAGNETIC MEDIA IS SUCH THAT THE MAGENTIC DISTRIBUTION IS ESSENTIALLY TRANSPARENT IN A PHOTOGRAPHIC SENSE. THUS THE PHOTOGRAPHIC IMAGE MAY BE VIEWED VIA THE MAGNETIC DISTRIBUTION, AND THE MAGNETIC DISTRUBITION MAY BE EMPLOYED FOR RECORDING AND PLAYBACK OF INFORMATION.
Inventors
- 👤 H Krall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/22; G03C7/24
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |