Patent US4712930A successfully refreshed from Google Patents.
US2876321A
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Humidity responsive resistor
Assignee: Honeywell Inc
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Filing: 1958-04-07
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Granted: 1959-03-03
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Elias J Amour
- 👤 John C Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:45
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
CONDITION RESPONSIVE APPARATUS ELECTRICALLY SENSITIVE TO RELATIVE HUMIDITY COMPRISING; A FIRED CERAMIC BASE HAVING RELATIVELY SPACED ELECTRODES ARRANGED ALONG A SURFACE THEROF AND IMPREGNATED WITH A RELATIVELY INSOLUBLE LITHIUM SALT, SAID CERAMIC BASE CONSISTING CHIEFLY OF ALUMINUM SILICATE AND SAID LITHIUM SALT BEING SELECTED FROM THE GROUP CONSISTING OF LITHIUM FLORIDE AND LITHIUM CARBONATE.
Claim 2
Dependent Claim
54 words
CONDITION RESPONSIVE APPARATUS ELECTRICALLY SENSITIVE TO RELATIVE HUMIDITY COMPRISING; A FIRED CERAMIC BASE HAVING RELATIVELY SPACED ELECTRODES ARRANGED ALONG A SURFACE THEROF AND IMPREGNATED WITH A RELATIVELY INSOLUBLE LITHIUM SALT, SAID CERAMIC BASE CONSISTING CHIEFLY OF ALUMINUM SILICATE AND SAID LITHIUM SALT BEING SELECTED FROM THE GROUP CONSISTING OF LITHIUM FLORIDE AND LITHIUM CARBONATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |