US3354439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical memory
Assignee: ExxonMobil Upstream Research Co
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Filing: 1962-10-29
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Granted: 1967-11-21
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Roscoe W Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:17
CPC Classifications
H; H01; H01G; H01G9/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
AN ELECTROCHEMICAL MEMORY APPARATUS COMPRISING AN ELECTROLYTIC CELL, A "WRITE" CIRCUIT, A "READ" CIRCUIT AND AN "ERASE" CIRCUIT; SAID CELL COMPRISING AN ELECTROLYTIC BATH, A PAIR OF NARROWLY SPACED INACTIVE ELECTRODES IMMERSED THEREIN, A THIRD ELECTRODE IMMERSED IN SAID BATH AND COMPOSED OF AN ELECTROPLATABLE METAL; SAID "WRITE" CIRCUIT COMPRISING A VOLTAGE SOURCE, THE NEGATIVE POLE THEREOF BEING ELECTRICALLY CONNECTED TO SAID NARROWLY SPACED ELECTRODES, AND THE POSITIVE POLE THEREOF BEING ELECTRICALLY CONNECTED TO SAID THIRD ELECTRODE; SAID "READ" CIRCUIT COMPRISING MEANS FOR DETECTING THE PRESENCE OF AN ELECTROPLATED METAL BRIDGE ELECTRICALLY CONNECTING SAID NARROWLY SPACED ELECTRODES; SAID "ERASE" CIRCUIT COMPRISING MEANS FOR ELECTROCHEMICALLY RETURNING THE METAL OF SAID BRIDGE TO SAID THIRD ELECTRODE; AND SWITCHING MEANS FOR SELECTING THE DESIRED ONE OF SAID CIRCUITS.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |