US4584461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar heater for liquid crystal element
Assignee: Stanley Electric Co Ltd
•
Filing: 1983-01-19
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Granted: 1986-04-22
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Expires: 2003-01-19
Abstract
Abstract A planar heater for a liquid crystal element includes a thin metal plate having a relatively high specific resistance such as stainless, nichrome, nickel-chrome iron alloy, etc. The thin metal plate is subjected to etching-working to form a mesh-like heat generating body, opposite ends of which are provided with terminal portions for connection into an electrical circuit.
Inventors
- 👤 Toru Teshima
- 👤 Kazuo Ariga
- 👤 Mitsunari Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:25
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133382; H; H05; H05B; H05B3/00; H05B3/84
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
A planar heater directly affixed to one major surface of a liquid crystal element characterized in that a very thin highly flexible metal plate having a relatively high specific resistance is subjected to etching-working to form a mesh-like heat generating body, opposite ends of which are provided with terminal portions for connection into an electrical circuit; said mesh-like heat generating body and a permeable reflecting plate being laminated together by an ultraviolet hardening type adhesive to provide an integral configuration which is positioned adjacent said liquid crystal element.
Claim 2
Dependent Claim
88 words
A planar heater directly affixed to one major surface of a liquid crystal element characterized in that a very thin highly flexible metal plate having a relatively high specific resistance is subjected to etching-working to form a mesh-like heat generating body, opposite ends of which are provided with terminal portions for connection into an electrical circuit; said mesh-like heat generating body and a permeable reflecting plate being laminated together by an ultraviolet hardening type adhesive to provide an integral configuration which is positioned adjacent said liquid crystal element.
Claim 3
Dependent Claim
85 words
A planar heater directly affixed to one major surface of a liquid crystal element characterized in that a very thin highly flexible metal plate having a relatively high specific resistance is subjected to etching-working to form a mesh-like heat generating body, opposite ends of which are provided with terminal portions for connection into an electrical circuit; said mesh-like heat generating body and a permeable reflecting plate being laminated together by an adhesive to provide an integral configuration which is positioned adjacent said liquid crystal element.
Claim 4
Dependent Claim
85 words
A planar heater directly affixed to one major surface of a liquid crystal element characterized in that a very thin highly flexible metal plate having a relatively high specific resistance is subjected to etching-working to form a mesh-like heat generating body, opposite ends of which are provided with terminal portions for connection into an electrical circuit; said mesh-like heat generating body and a permeable reflecting plate being laminated together by an adhesive to provide an integral configuration which is positioned adjacent said liquid crystal element.
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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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |