Patent DE875601C successfully refreshed from Google Patents.
US3373091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data storage device and method
Assignee: Electro Optical Systems Inc
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Filing: 1964-05-21
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Granted: 1968-03-12
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Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 Findl Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:24
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
AN EFFICIENT, EASILY REVERSIBLE PROCESS FOR THE REPRODUCTION OF A LIGHT IMAGE REQUIRING A LOW ELECTRICAL POTENTIAL COMPRISING: (A) EXPOSING TO SAID LIGHT IMAGE A PHOTOCONDUCTIVE LAYER ON A CONTIGUOUS ELECTROLYTICALLY CONDUCTIVE LAYER, SAID ELECTROLYTICALLY CONDUCTIVE LAYER CONSISTING ESSENTIALLY OF: (I) A FIRST FILM HAVING A DYE FIXED THEREIN WHOSE COLOR CHANGES AT A SET ELECTRICAL POTENTIAL AND HAVING AT LEAST ONE ASSOCIATED ION MOVABLE THEREIN ADAPTED TO CHANGE CONCENTRATION BY THE PASSAGE OF CURRENT THROUGH SAID FIRST FILM WITH SAID CONCENTRATION CHANGE CAUSING AN ELECTRICAL POTENTIAL CHANGE IN SAID FIRST FILM WHICH INCLUDES SAID SET DYE ELECTRICAL POTENTIAL, AND (II) A CONTIGUOUS SECOND FILM HAVING AT LEAST ONE COUNTERPART ION MOVABLE THEREIN ADAPTED TO CHANGE CONCENTRATION BY THE PASSAGE OF CURRENT THROUGH SAID SECOND FILM, SAID COUNTERPART ION CONCENTRATION CHANGE BEING OPPOSITE TO SAID ASSOCIATED ION CONCENTRATION CHANGE; AND (B) PREVENTING SAID ASSOCIATED IONS FROM MIXING WITH SAID COUNTERPART IONS, SAID IONS BEING RELATED BY A REVERSIBLE ELECTROCHEMICAL REACTION; AND PASSING CURRENT SELECTIVELY THROUGH THE LIGHT EXPOSED PORTIONS OF SAID PHOTOCONDUCTIVE LAYER AND THE ADJOINING PORTIONS OF SAID ELECTROLYTICALLY CONDUCTIVE LAYER TO CHANGE THE COLOR OF SAID DYE IN SAID PORTIONS.
Claim 2
Dependent Claim
192 words
AN EFFICIENT, EASILY REVERSIBLE PROCESS FOR THE REPRODUCTION OF A LIGHT IMAGE REQUIRING A LOW ELECTRICAL POTENTIAL COMPRISING: (A) EXPOSING TO SAID LIGHT IMAGE A PHOTOCONDUCTIVE LAYER ON A CONTIGUOUS ELECTROLYTICALLY CONDUCTIVE LAYER, SAID ELECTROLYTICALLY CONDUCTIVE LAYER CONSISTING ESSENTIALLY OF: (I) A FIRST FILM HAVING A DYE FIXED THEREIN WHOSE COLOR CHANGES AT A SET ELECTRICAL POTENTIAL AND HAVING AT LEAST ONE ASSOCIATED ION MOVABLE THEREIN ADAPTED TO CHANGE CONCENTRATION BY THE PASSAGE OF CURRENT THROUGH SAID FIRST FILM WITH SAID CONCENTRATION CHANGE CAUSING AN ELECTRICAL POTENTIAL CHANGE IN SAID FIRST FILM WHICH INCLUDES SAID SET DYE ELECTRICAL POTENTIAL, AND (II) A CONTIGUOUS SECOND FILM HAVING AT LEAST ONE COUNTERPART ION MOVABLE THEREIN ADAPTED TO CHANGE CONCENTRATION BY THE PASSAGE OF CURRENT THROUGH SAID SECOND FILM, SAID COUNTERPART ION CONCENTRATION CHANGE BEING OPPOSITE TO SAID ASSOCIATED ION CONCENTRATION CHANGE; AND (B) PREVENTING SAID ASSOCIATED IONS FROM MIXING WITH SAID COUNTERPART IONS, SAID IONS BEING RELATED BY A REVERSIBLE ELECTROCHEMICAL REACTION; AND PASSING CURRENT SELECTIVELY THROUGH THE LIGHT EXPOSED PORTIONS OF SAID PHOTOCONDUCTIVE LAYER AND THE ADJOINING PORTIONS OF SAID ELECTROLYTICALLY CONDUCTIVE LAYER TO CHANGE THE COLOR OF SAID DYE IN SAID PORTIONS.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |