Patent US4818352A successfully refreshed from Google Patents.
US4818352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of functional film on electrode plate relatively high in surface resistivity
Assignee: Central Glass Co Ltd
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Filing: 1987-05-04
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Granted: 1989-04-04
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Expires: 2007-05-04
Abstract
Abstract The invention relates to an electrodeposition method for forming a film of an electrochemically synthesizable and functional substance, e.g. Prussian blue useful as an electrochromic material, on an electrode plate having a conductive coating film relatively high in surface resistivity such as a tin dioxide or indium trioxide film. A desired film of uniform thickness can be formed even when the electrode plate is as large as 40 cm square or is still larger by providing the electrode plate with an elongate auxiliary electrode element formed of, for example, a metal wire or foil, which is attached to the outer surface of the conductive coating film so as to extend at least along the whole periphery of the electrode plate.
Inventors
- 👤 Hiroshi Inaba
- 👤 Kiyoshi Nakase
- 👤 Yukitoshi Yanagida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:33
CPC Classifications
C; C25; C25D; C25D9/00; C25D9/04; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C09; C09D; C09D5/00; C09D5/44; C09D5/4476
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
123 words
A method of electrolytically depositing a film of an electrochemically synthesizable substance on an electrode plate, which comprises a substrate and a conductive coating film not lower than 3Ω/cm 2 in surface resistivity, by immersing said electrode plate and another electrode in an electrolytic liquid and causing a DC current of a predetermined density to flow between said electrode plate and said another electrode, characterized in that said electrode plate is provided with an elongate auxiliary electrode element which is attached to the outer surface of said conductive coating film and extends at least along the whole periphery of said conductive coating film and that said auxiliary electrode element is used as the electric terminal of said electrode plate in producing said current.
Claim 2
Independent Claim
123 words
A method of electrolytically depositing a film of an electrochemically synthesizable substance on an electrode plate, which comprises a substrate and a conductive coating film not lower than 3Ω/cm 2 in surface resistivity, by immersing said electrode plate and another electrode in an electrolytic liquid and causing a DC current of a predetermined density to flow between said electrode plate and said another electrode, characterized in that said electrode plate is provided with an elongate auxiliary electrode element which is attached to the outer surface of said conductive coating film and extends at least along the whole periphery of said conductive coating film and that said auxiliary electrode element is used as the electric terminal of said electrode plate in producing said current.
Claim 3
Dependent Claim
15 words
A method according to claim 1, wherein said auxiliary electrode element comprises a metal wire.
Claim 4
Dependent Claim
15 words
A method according to claim 1, wherein said auxiliary electrode element comprises a metal foil.
Claim 5
Dependent Claim
35 words
A method according to claim 1, wherein said auxiliary electrode element comprises a conductive stripe formed by applying a wet composition comprising a conductive powder onto said conductive coating film and baking the applied composition.
Claim 6
Dependent Claim
62 words
A method according to claim 1, wherein said auxiliary electrode element comprises an essential portion which extends in a marginal region of said conductive coating film along the whole periphery of said conductive coating film and at least one supplementary portion which extends within the area enclosed by said essential portion so as to divide said area into a plurality of segments.
Claim 7
Dependent Claim
32 words
A method according to claim 1, wherein said conductive coating film is formed of a transparent metal oxide selected from the group consisting of SnO 2 and In 2 O 3 .
Claim 8
Dependent Claim
14 words
A method according to claim 1, wherein said electrochemically synthesizable substance is Prussian blue.
Claim 9
Dependent Claim
24 words
A method according to claim 7, wherein said electrolytic liquid comprises an aqueous mixed solution of K 3 Fe(CN) 6 and another ferric salt.
Claim 10
Dependent Claim
15 words
A method according to claim 1, wherein said electrochemically synthesizable substance is MoO 3 .
Claim 11
Dependent Claim
20 words
A method according to claim 9, wherein said electrolytic liquid comprises an aqueous solution of Li 2 MoO 4 .
Claim 12
Dependent Claim
13 words
A method according to claim 1, wherein said electrochemically synthesizable substance is NiOOH.
Claim 13
Dependent Claim
22 words
A method according to claim 11, wherein said electrolytic liquid comprises an aqueous mixed solution of NiSO 4 and an ammonium salt.
Claim 14
Dependent Claim
24 words
A method according to claim 1, wherein said electrochemically synthesizable substance is an electrochromic polymer selected from the group consisting of polypyrrole and polythiophene.
Claim 15
Dependent Claim
25 words
A method according to claim 13, wherein said electrolytic liquid comprises the monomer of said polymer, at least one lithium salt and an organic solvent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |