Patent US5296819A successfully refreshed from Google Patents.
US5296819A
Expired / Lapsed
US
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Polymer capacitative moisture sensitive device comprising heating means
Assignee: Azbil Corp
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Filing: 1992-06-23
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Granted: 1994-03-22
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Expires: 2012-06-23
Abstract
Abstract A moisture sensitive device includes a polymer capacitive moisture sensitive element and a heater. The polymer capacitive moisture sensitive element is formed by sequentially stacking a lower electrode, a moisture sensitive film made of an organic polymer resin material, and an upper electrode on an insulating substrate. The heater serves to heat the moisture sensitive film to restore the original characteristics thereof.
Inventors
- 👤 Takaaki Kuroiwa
- 👤 Tooru Abe
- 👤 Tetsuya Miyagishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:12
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223; G01N27/225
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
A moisture sensitive device comprising: a polymer capacitive moisture sensitive element, having initial characteristics, formed by sequentially stacking, on an insulating substrate, a lower electrode, a moisture sensitive film made of an organic polymer resin material and an upper electrode; and heating means for heating said moisture sensitive film to restore said initial characteristics in said polymer capacitive moisture sensitive element when said characteristics drift from their initial state.
Claim 2
Dependent Claim
69 words
A moisture sensitive device comprising: a polymer capacitive moisture sensitive element, having initial characteristics, formed by sequentially stacking, on an insulating substrate, a lower electrode, a moisture sensitive film made of an organic polymer resin material and an upper electrode; and heating means for heating said moisture sensitive film to restore said initial characteristics in said polymer capacitive moisture sensitive element when said characteristics drift from their initial state.
Claim 3
Dependent Claim
82 words
A device according to claim 1, wherein said heating means performs a heating operation in one of a first temperature range between the highest temperature at which said moisture sensitive device is in its normal operating condition and the temperature at which the softening commences for said moisture sensitive device, and a second temperature range between the highest temperature at which said moisture sensitive device is in its normal operating condition and the glass transition point temperature of said moisture sensitive element.
Claim 4
Dependent Claim
24 words
A device according to claim 2, wherein said heating means performs a heating operation in a temperature range between 90° C. and 200° C.
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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) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |