US4066336A
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Electrode for a controllable electrochromic indicator device and method of manufacture
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1975-12-30
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Granted: 1978-01-03
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Expires: 1995-12-30
Abstract
Abstract Electrode for a controllable electrochromic indicator device with an electrochromic layer between a transparent first and a second electrode, the second electrode having a porous solid impregnated with a liquid electrolyte.
Inventors
- 👤 Hans Rudolf Zeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1525
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
46 words
Electrode for a controllable electrochromic indicator device with an electrochromic layer between a transparent first and a second electrode, the second electrode comprising a porous solid impregnated with a liquid electrolyte to form a single layer second electrode, an electrical contact connected to the second electrode.
Claim 2
Dependent Claim
46 words
Electrode for a controllable electrochromic indicator device with an electrochromic layer between a transparent first and a second electrode, the second electrode comprising a porous solid impregnated with a liquid electrolyte to form a single layer second electrode, an electrical contact connected to the second electrode.
Claim 3
Dependent Claim
26 words
Electrode as in claim 1 wherein the average pore diameter of the solid lies between 20 and 200 A and the porosity is greater than 25%.
Claim 4
Dependent Claim
15 words
Electrode as in claim 2 wherein the porous solid is impregnated with a strong acid.
Claim 5
Dependent Claim
19 words
Electrode as in claim 2 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents.
Claim 6
Dependent Claim
14 words
Electrode as in claim 2 wherein the porous solid is impregnated with sulfuric acid.
Claim 7
Dependent Claim
13 words
Electrode as in claim 2 wherein the porous solid comprises a silicate structure.
Claim 8
Dependent Claim
15 words
Electrode as in claim 6 wherein the poroud solid is impregnated with a strong acid.
Claim 9
Dependent Claim
19 words
Electrode as in claim 6 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents.
Claim 10
Dependent Claim
14 words
Electrode as in claim 6 wherein the porous solid is impregnated with sulfuric acid.
Claim 11
Dependent Claim
11 words
Electrode as in claim 6 wherein the porous solid comprises glass.
Claim 12
Dependent Claim
15 words
Electrode as in claim 10 wherein the porous solid is impregnated with a strong acid.
Claim 13
Dependent Claim
19 words
Electrode as in claim 10 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents.
Claim 14
Dependent Claim
14 words
Electrode as in claim 10 wherein the porous solid is impregnated with sulfuric acid.
Claim 15
Dependent Claim
19 words
Electrode as in claim 10 wherein the porous solid predominantly comprises a silicate skeleton of a soft alkali glass.
Claim 16
Dependent Claim
15 words
Electrode as in claim 14 wherein the porous solid is impregnated with a strong acid.
Claim 17
Dependent Claim
19 words
Electrode as in claim 14 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents.
Claim 18
Dependent Claim
14 words
Electrode as in claim 14 wherein the porous solid is impregnated with sulfuric acid.
Claim 19
Dependent Claim
21 words
Electrode as in claim 1 wherein the porous solid is colored with organic and inorganic dyes as well as with metals.
Claim 20
Dependent Claim
15 words
Electrode as in claim 18 wherein the porous solid is impregnated with a strong acid.
Claim 21
Dependent Claim
19 words
Electrode as in claim 18 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents.
Claim 22
Dependent Claim
14 words
Electrode as in claim 18 wherein the porous solid is impregnated with sulfuric acid.
Claim 23
Dependent Claim
15 words
Electrode as in claim 1 wherein the porous solid is impregnated with a strong acid.
Claim 24
Dependent Claim
19 words
Electrode as in claim 1 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents.
Claim 25
Dependent Claim
20 words
Electrode as in claim 23 wherein the porous solid is impregnated with a solution of LiClO 4 in propylene carbonate.
Claim 26
Dependent Claim
19 words
Electrode as in claim 23 wherein the porous solid is impregnated with a solution of LiClO 4 in tetrahydrofuran.
Claim 27
Dependent Claim
19 words
Electrode as in claim 23 wherein the porous solid is impregnated with a solution of LiClO 4 in 1,2-dimethoxyethane.
Claim 28
Dependent Claim
19 words
Electrode as in claim 23 wherein the porous solid is impregnated with a solution of LiCl in propylene carbonate.
Claim 29
Dependent Claim
18 words
Electrode as in claim 23 wherein the porous solid is impregnated with a solution of LiCl in tetrahydrofuran.
Claim 30
Dependent Claim
18 words
Electrode as in claim 23 wherein the porous solid is impregnated with a solution of LiCl in 1,2-dimethoxyethane.
Claim 31
Dependent Claim
16 words
Electrode as in claim 1 wherein the electrical contact comprises a cover layer comprising a metal.
Claim 32
Dependent Claim
22 words
Electrode as in claim 1 wherein the porous solid is colored with organic and inorganic dyes as well as with metal ions.
Claim 33
Dependent Claim
18 words
Electrode as in claim 1 wherein the porous solid is colored with pigments as well as with metals.
Claim 34
Dependent Claim
19 words
Electrode as in claim 1 wherein the porous solid is colored with pigments as well as with metal ions.
Claim 35
Dependent Claim
14 words
Electrode as in claim 1 wherein the porous solid is impregnated with sulfuric acid.
Claim 36
Dependent Claim
23 words
Electrode as in claim 1 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents with a complexing agent.
Claim 37
Dependent Claim
23 words
Electrode as in claim 1 wherein the porous solid is impregnated with solutions of lithium salts in organic solvents with AlCl 3 .
Claim 38
Dependent Claim
15 words
Electrode as in claim 1 wherein the electrical contact comprises a cover layer comprising Pb.
Claim 39
Dependent Claim
79 words
Method of fabricating an electrode for a controllable electrochromic indicator device with an electrochromic layer between a transparent first and a second electrode, an electrical contact connected to the second electrode, the second electrode comprising a porous solid impregnated with a liquid electrolyte to form a single layer second electrode, the method comprising: etching out a multicomponent substance to form the porous solid and impregnating the porous solid with a liquid electrolyte to form a single layer second electrode.
Claim 40
Dependent Claim
79 words
Method of fabricating an electrode for a controllable electrochromic indicator device with an electrochromic layer between a transparent first and a second electrode, an electrical contact connected to the second electrode, the second electrode comprising a porous solid impregnated with a liquid electrolyte to form a single layer second electrode, the method comprising: etching out a multicomponent substance to form the porous solid and impregnating the porous solid with a liquid electrolyte to form a single layer second electrode.
Claim 41
Dependent Claim
42 words
Method as in claim 38 wherein the alkali constituent of a soft alkali glass is etched out with a hot acid such as hydrofluoric acid and the resultant porous solid is washed, dried and impregnated under vacuum with 0.1-10 molar sulfuric acid.
Claim 42
Dependent Claim
31 words
Method as in claim 39 wherein before the impregnation a hermetically sealing and electrically conducting layer is applied to the outer side of the porous solid to form the electrical contact.
Claim 43
Dependent Claim
31 words
Method as in claim 38 wherein before the impregnation a hermetically sealing and electrically conducting layer is applied to the outer side of the porous solid to form the electrical contact.
References Cited (Backward Citations)
US3844636A
Cited
US3944333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |