US5097358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochromic element
Assignee: Toyoda Gosei Co Ltd
•
Filing: 1990-04-25
•
Granted: 1992-03-17
•
Expires: 2010-04-25
Abstract
Abstract An electrochromic element comprising a pair of electrode films, at least one of which is a transparent electrode film, a color forming film laminated between both the electrode films and an electrolyte. The color forming film is formed on the electrode film by depositing thereon a conductive metal oxide such as indium oxide and tungsten oxide. The depositing ratio of tungsten oxide and indium oxide preferably is within the range of 10:1 to 3:1 by weight ratio.
Inventors
- 👤 Toshiyasu Ito
- 👤 Takaaki Mori
- 👤 Mamoru Kato
- 👤 Masanobu Senda
- 👤 Takahiko Asaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:52
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1524
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
An electrochromic element comprising: a first electrode and a second electrode having a space therebetween, said first electrode including a transparent electrode film; an electrolyte disposed in said space between said first electrode and said second electrode; and a color forming layer in contact with and disposed between said first electrode and said electrolyte, said color forming layer including a mixture of a color forming material and a conductive metal oxide.
Claim 2
Dependent Claim
71 words
An electrochromic element comprising: a first electrode and a second electrode having a space therebetween, said first electrode including a transparent electrode film; an electrolyte disposed in said space between said first electrode and said second electrode; and a color forming layer in contact with and disposed between said first electrode and said electrolyte, said color forming layer including a mixture of a color forming material and a conductive metal oxide.
Claim 3
Dependent Claim
15 words
An electrochromic element according to claim 1, wherein said conductive metal oxide includes tin oxide.
Claim 4
Dependent Claim
15 words
An electrochromic element according to claim 1, wherein said conductive metal oxide includes indium oxide.
Claim 5
Dependent Claim
15 words
An electrochromic element according to claim 1, wherein said color forming material is tungsten oxide.
Claim 6
Dependent Claim
31 words
An electrochromic element according to claim 1, wherein the mixture ratio of said color forming material to said conductive metal oxide is in the range from 10:1 to 3:1 by weight.
Claim 7
Dependent Claim
22 words
An electrochromic element according to claim 1, further comprising an oxidative color forming layer disposed between said second electrode and said electrolyte.
Claim 8
Dependent Claim
109 words
An electrochromic element comprising: a first electrode and a second electrode having a space therebetween, said first electrode including a transparent electrode film; an electrolyte disposed in said space between said first electrode and said second electrode; and a color forming layer in contact with and disposed between said first electrode and said electrolyte, said color forming layer including a mixture of tungsten oxide acting as a color forming material and a conductive metal oxide selected from the group consisting of tin oxide and indium oxide, wherein the mixture ratio of the tungsten oxide to the conductive metal oxide is in the range of 10:1 to 3:1 by weight.
Claim 9
Dependent Claim
109 words
An electrochromic element comprising: a first electrode and a second electrode having a space therebetween, said first electrode including a transparent electrode film; an electrolyte disposed in said space between said first electrode and said second electrode; and a color forming layer in contact with and disposed between said first electrode and said electrolyte, said color forming layer including a mixture of tungsten oxide acting as a color forming material and a conductive metal oxide selected from the group consisting of tin oxide and indium oxide, wherein the mixture ratio of the tungsten oxide to the conductive metal oxide is in the range of 10:1 to 3:1 by weight.
Claim 10
Dependent Claim
25 words
An electrochromic layer according to claim 7, further comprising an oxidative color forming layer formed of polyaniline disposed between said second electrode and said electrolyte.
References Cited (Backward Citations)
US4304465A
Cited
JPS5818618A
Cited
US4573768A
Cited
US4664934A
Cited
US4832468A
Cited
US4750816A
Cited
US4805996A
Cited
US4872745A
Cited
US4874229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |