US3363239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical data storage and retrieval unit
Assignee: ExxonMobil Upstream Research Co
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Filing: 1962-10-01
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Granted: 1968-01-09
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Warren A Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:13
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN ELECTRO-OPTICAL DATA STORAGE AND RETRIEVAL UNIT COMPRISING AN ELECTROLYTIC BATH, A CONTAINER HOLDING SAID BATH, TWO ELECTRODES IMMERSED IN SAID BATH, THE FIRST OF SAID ELECTRODES BEING TRANSPARENT, AND THE SECOND OF SAID ELECTRODERS COMPRISING A SUBSTANCE WHICH IS REVERSIBLY ELECTROPLATABLE ON SAID FIRST ELECTRODE AND WHICH, WHEN ELECTROPLATED THEREON, RENDERS SAID FIRST ELECTRODE LESS TRANSPARENT; A SOURCE OF DIRECT CURRENT AND A PHOTOCONDUCTIVE CELL CONNECTED IN SERIES WITH SAID IMMERSED ELECTRODES; FIRST AND SECOND LIGHT SOURCES, SAID FIRST LIGHT SOURCE DISPOSED IN A POSITION TO IMPINGE UPON SAID PHOTOCONDUCTIVE CELL, AND MEANS FOR MEASURING LIGHT INTENSITIES DISPOSED IN A POSITION TO INTERCEPT LIGHT FROM SAID SECOND SOURCE AFTER PASSAGE THEREOF THROUGH SAID FIRST ELECTRODE.
Claim 2
Dependent Claim
116 words
AN ELECTRO-OPTICAL DATA STORAGE AND RETRIEVAL UNIT COMPRISING AN ELECTROLYTIC BATH, A CONTAINER HOLDING SAID BATH, TWO ELECTRODES IMMERSED IN SAID BATH, THE FIRST OF SAID ELECTRODES BEING TRANSPARENT, AND THE SECOND OF SAID ELECTRODERS COMPRISING A SUBSTANCE WHICH IS REVERSIBLY ELECTROPLATABLE ON SAID FIRST ELECTRODE AND WHICH, WHEN ELECTROPLATED THEREON, RENDERS SAID FIRST ELECTRODE LESS TRANSPARENT; A SOURCE OF DIRECT CURRENT AND A PHOTOCONDUCTIVE CELL CONNECTED IN SERIES WITH SAID IMMERSED ELECTRODES; FIRST AND SECOND LIGHT SOURCES, SAID FIRST LIGHT SOURCE DISPOSED IN A POSITION TO IMPINGE UPON SAID PHOTOCONDUCTIVE CELL, AND MEANS FOR MEASURING LIGHT INTENSITIES DISPOSED IN A POSITION TO INTERCEPT LIGHT FROM SAID SECOND SOURCE AFTER PASSAGE THEREOF THROUGH SAID FIRST ELECTRODE.
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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |