Patent US2714149A successfully refreshed from Google Patents.
US2714149A
Expired / Lapsed
US
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Electric hygroscope
Assignee: Monmouth Electric Co
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Filing: 1953-06-02
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Granted: 1955-07-26
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Expires: 1973-06-02
Abstract
No abstract record available.
Inventors
- 👤 Leo S Craig
- 👤 Kaufman Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:42
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CARBON TYPE HYGROMETER WHICH INCLUDES A NONCONDUCTIVE CORE SEPARATING A PAIR OF ELECTRODES, A HUMIDITY SENSITIVE FILM COATED ON SAID CORE BETWEEN SAID ELECTRODES, SAID HUMIDITY SENSITIVE FILM INCLUDING A MIXTURE OF CARBON POWDER AND CONDUCTIVE METAL POWDERS IN A 50-50 MIXTURE, SAID MIXTURE MIXED IN A DILUTE WATER SOLUTION WITH HYDROXY-ETHYL CELLULOSE, POLY-OXYETHYLENE, SORBITOL AND ALKYL ARYL POLYETHER ALCOHOL.
Claim 2
Dependent Claim
61 words
A CARBON TYPE HYGROMETER WHICH INCLUDES A NONCONDUCTIVE CORE SEPARATING A PAIR OF ELECTRODES, A HUMIDITY SENSITIVE FILM COATED ON SAID CORE BETWEEN SAID ELECTRODES, SAID HUMIDITY SENSITIVE FILM INCLUDING A MIXTURE OF CARBON POWDER AND CONDUCTIVE METAL POWDERS IN A 50-50 MIXTURE, SAID MIXTURE MIXED IN A DILUTE WATER SOLUTION WITH HYDROXY-ETHYL CELLULOSE, POLY-OXYETHYLENE, SORBITOL AND ALKYL ARYL POLYETHER ALCOHOL.
References Cited (Backward Citations)
US2256642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |