Patent US2915392A successfully refreshed from Google Patents.
US2915392A
Expired / Lapsed
US
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Processes for producing photographic images and elements therefor
Assignee: EIDP Inc
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Filing: 1955-04-20
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Granted: 1959-12-01
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Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Pedersen Charles John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:57
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
A PROCESS WHICH COMPRISE EXPOSING THROUGH AN IMAGE-BEARING TRANSPARNCY BY MEANS OF LIGHT CONTAINING A SUBSTANTIAL AMOUNT OF RADIATIONS OF WAVELENGTH BETWEEN 3,000 AND 5,000 A. A LAYER CONTAINING (1) AN ETHANOLSOULUBLE PHTHALOCYANINE COMPLEX HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |