US4874229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar dimmer
Assignee: Toyoda Gosei Co Ltd
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Filing: 1988-03-25
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Granted: 1989-10-17
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Expires: 2008-03-25
Abstract
Abstract A planar dimmer comprising a transparent base, a dimming part, capable of dimming, disposed on the base, the dimming part comprising a first electrode layer formed on the base, a second electrode layer set facing the first electrode layer, a coloring part disposed between the two electrode layers, and colors or discolors in response to the stimulus from the two electrode layers, and a conducting part disposed between the base and the first electrode layer in such a way as to be in contact with the first electrode layer in order to apply a uniform voltage throughout the first electrode layer.
Inventors
- 👤 Toshiyasu Ito
- 👤 Jun Minoura
- 👤 Takaaki Mori
- 👤 Shigeyuki Takahashi
- 👤 Mamoru Kato
- 👤 Junichi Shimada
- 👤 Fujio Hayakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:15
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/155
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A planar dimmer comprising a transparent base, a dimming means, capable of dimming, comprising a first electrode layer disposed on said base, a second electrode layer set facing said first electrode layer, and a coloring means, disposed between said first and second electrode layers, that colors and discolors in response to a stimulus from said electrodes, and a conducting means disposed between said base and first electrode layer in such a way to be in contact with said first electrode layer to apply a uniform voltage throughout said first electrode layer, said conducting means comprising a plurality of long, fine conductors arranged throughout the surface of said first electrode layer.
Claim 2
Dependent Claim
110 words
A planar dimmer comprising a transparent base, a dimming means, capable of dimming, comprising a first electrode layer disposed on said base, a second electrode layer set facing said first electrode layer, and a coloring means, disposed between said first and second electrode layers, that colors and discolors in response to a stimulus from said electrodes, and a conducting means disposed between said base and first electrode layer in such a way to be in contact with said first electrode layer to apply a uniform voltage throughout said first electrode layer, said conducting means comprising a plurality of long, fine conductors arranged throughout the surface of said first electrode layer.
Claim 3
Dependent Claim
36 words
A planar dimmer, as set forth in claim 1, wherein a portion of said conductors is embedded in said base, the remaining portions of said conductors not embedded being lengthwise connected to said first electrode layer.
Claim 4
Dependent Claim
30 words
A planar dimmer, as set forth in claim 1, further comprising a connecting means disposed between said base and first electrode layer connecting said base and first electrode layer together.
Claim 5
Dependent Claim
49 words
A planar dimmer, as set forth in claim 3, wherein each conductor has a flat surface spanning its length, except for said flat surface, the remaining part of said conductor being embedded in said base, and said flat surface being connected in its entirety to said first electrode layer.
Claim 6
Dependent Claim
106 words
A planar dimmer comprising a transparent base, a dimming means, capable of dimming, comprising a first electrode layer disposed on said base, a second electrode layer set facing said first electrode layer, and a coloring means, disposed between said first and second electrode layers, that colors and discolors in response to a stimulus from said electrodes, and a conducting means disposed between said base and first electrode layer in such a way to be in contact with said first electrode layer to apply a uniform voltage throughout said first electrode layer, said conducting means comprising a plurality of bands of metal film formed on said base.
Claim 7
Dependent Claim
106 words
A planar dimmer comprising a transparent base, a dimming means, capable of dimming, comprising a first electrode layer disposed on said base, a second electrode layer set facing said first electrode layer, and a coloring means, disposed between said first and second electrode layers, that colors and discolors in response to a stimulus from said electrodes, and a conducting means disposed between said base and first electrode layer in such a way to be in contact with said first electrode layer to apply a uniform voltage throughout said first electrode layer, said conducting means comprising a plurality of bands of metal film formed on said base.
Claim 8
Dependent Claim
42 words
A planar dimmer, as set forth in claim 5, further comprising a plurality of bands of paint film made of synthetic resin formed on said base in positions corresponding to said metal films, said metal films being formed on said paint films.
Claim 9
Dependent Claim
48 words
A planar dimmer, as set forth in claim 1, further comprising a second base set facing said second electrode layer, a conducting means also disposed between said second electrode layer and said second base in such a way as to be in contact with said second electrode layer.
Claim 10
Dependent Claim
48 words
A planar dimmer as set forth in claim 5, further comprising a second base set facing said second electrode layer, a conducting means also disposed between said second electrode layer and said second base in such a way as to be in contact with said second electrode layer.
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) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |