US4156559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic display cell
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1977-06-16
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Granted: 1979-05-29
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Expires: 1997-06-16
Abstract
Abstract An electrolytic display cell of the type comprising an electrolyte containing a metallic salt dissolved in a solvent, two parallel plates whereof one is covered by a semi-transparent electrode and whereof the other supports a counter-electrode, the electrode and counter-electrode being connected to the positive and negative poles of a d.c. voltage source via a switch permitting the connection of each pole to any one of the electrodes, the display being obtained by connecting the electrode to the negative pole of the source and the erasing by connecting the electrode to the positive pole, wherein the solvent is an organic solvent and the salt a silver halide.
Inventors
- 👤 Jacques Duchene
- 👤 Robert Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:49
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1506
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
An electrolytic display cell of the type comprising an electrolyte containing a metallic salt dissolved in a solvent, two parallel plates whereof one is covered by a semi-transparent electrode and whereof the other supports a counter-electrode, the electrode and counter-electrode being connected to the positive and negative poles of a d.c. voltage source via a switch permitting the connection of each pole to any one of the electrodes, the display being obtained by connecting the electrode to the negative pole of the source and the erasing by connecting the electrode to the positive pole, wherein the solvent is an organic solvent and the salt a silver halide.
Claim 2
Dependent Claim
107 words
An electrolytic display cell of the type comprising an electrolyte containing a metallic salt dissolved in a solvent, two parallel plates whereof one is covered by a semi-transparent electrode and whereof the other supports a counter-electrode, the electrode and counter-electrode being connected to the positive and negative poles of a d.c. voltage source via a switch permitting the connection of each pole to any one of the electrodes, the display being obtained by connecting the electrode to the negative pole of the source and the erasing by connecting the electrode to the positive pole, wherein the solvent is an organic solvent and the salt a silver halide.
Claim 3
Dependent Claim
15 words
A cell according to claim 1, wherein the halide is a bromide or an iodide.
Claim 4
Dependent Claim
20 words
A cell according to claim 2, wherein the electrolyte also comprises at least one alkali bromide or iodide supporting salt.
Claim 5
Dependent Claim
16 words
A cell according to claim 1, wherein the solvent is a mixture of acetonitrile and methyl-alcohol.
References Cited (Backward Citations)
US3839857A
Cited
US3995940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |