Patent EP0279959B1 successfully refreshed from Google Patents.
US3102811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing images, using light sensitive aromatic 1,2-dialdehydes and elements therefor
Assignee: EIDP Inc
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Filing: 1960-04-07
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Granted: 1963-09-03
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Expires: 1980-04-07
Abstract
No abstract record available.
Inventors
- 👤 Barney Arthur Livingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS WHICH COMPRISES (1) EXPOSING TO ACTINIC RADIATION, IMAGEWISE, A PHOTOSENSITIVE ELEMENT COMPRISING A SHEET SUPPORT CARRYING A STRATUM OF AN AROMATIC DIALDEHYDE CONTAINING 1-2 BENZENE RINGS AND HAVING THE TWO ALDEHYDE GROUP ATTACHED TO ADJOINING AROMATIC RING CARBON ATOMS AND (2) DEVELOPING THE EXPOSED ELEMENT BY TREATING IT WITH AN AMMONIUM SALT UNTIL A VISIBLE IMAGE FORMS IN THE UNEXPOSED AREAS.
Claim 2
Dependent Claim
63 words
A PROCESS WHICH COMPRISES (1) EXPOSING TO ACTINIC RADIATION, IMAGEWISE, A PHOTOSENSITIVE ELEMENT COMPRISING A SHEET SUPPORT CARRYING A STRATUM OF AN AROMATIC DIALDEHYDE CONTAINING 1-2 BENZENE RINGS AND HAVING THE TWO ALDEHYDE GROUP ATTACHED TO ADJOINING AROMATIC RING CARBON ATOMS AND (2) DEVELOPING THE EXPOSED ELEMENT BY TREATING IT WITH AN AMMONIUM SALT UNTIL A VISIBLE IMAGE FORMS IN THE UNEXPOSED AREAS.
References Cited (Backward Citations)
US2681277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |