US2884593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for determining moisture content of various materials and substances
Assignee: Individual
•
Filing: 1954-04-20
•
Granted: 1959-04-28
•
Expires: 1974-04-20
Abstract
No abstract record available.
Inventors
- 👤 Miyata Akira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:11
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DEVICE FOR INDICATING THE MOISTURE CONTENT OF GRAINS, POWDERED CHEMICALS AND THE LIKE MATERIALS COMPRISING, A HUMIDITY-RESPONSIVE, SUBSTANTIALLY RIGID, ELECTRICALLY-CONDUCTIVE ELEMENT FOR INSERTING INTO THE MATERIAL WHEN TAKING A READING, SAID ELEMENT COMPRISING A FIRST METALLIC ELECTRODE HAVING PERIPHERAL SURFACE PROVIDED WITH A PLURALITY OF SPACED INDENTATIONS AND HAVING A THIN, MOISTURE PERVIOUS ANODIC FILM ON SAID SURFACES, A SECOND ELECTRODE COMPRISING AN ELECTRICALLY-CONDUCTIVE METALLIC FILM DEPOSITED IN SAID INDENTATIONS THEREBY TO PROVIDE, EXPOSED, SPACED AREAS OF SAID FILM ON THE SURFACE OF SAID HUMIDITY-RESPONSIVE ELEMENT, AND MEANS CONNECTED TO SAID ELECTRODES FOR INDICATING HUMIDITY VARIATIONS AS A FUNCTION OF CAPACITANCE CHANGES BETWEEN SAID ELECTRODES.
Claim 2
Independent Claim
106 words
A DEVICE FOR INDICATING THE MOISTURE CONTENT OF GRAINS, POWDERED CHEMICALS AND THE LIKE MATERIALS COMPRISING, A HUMIDITY-RESPONSIVE, SUBSTANTIALLY RIGID, ELECTRICALLY-CONDUCTIVE ELEMENT FOR INSERTING INTO THE MATERIAL WHEN TAKING A READING, SAID ELEMENT COMPRISING A FIRST METALLIC ELECTRODE HAVING PERIPHERAL SURFACE PROVIDED WITH A PLURALITY OF SPACED INDENTATIONS AND HAVING A THIN, MOISTURE PERVIOUS ANODIC FILM ON SAID SURFACES, A SECOND ELECTRODE COMPRISING AN ELECTRICALLY-CONDUCTIVE METALLIC FILM DEPOSITED IN SAID INDENTATIONS THEREBY TO PROVIDE, EXPOSED, SPACED AREAS OF SAID FILM ON THE SURFACE OF SAID HUMIDITY-RESPONSIVE ELEMENT, AND MEANS CONNECTED TO SAID ELECTRODES FOR INDICATING HUMIDITY VARIATIONS AS A FUNCTION OF CAPACITANCE CHANGES BETWEEN SAID ELECTRODES.
References Cited (Backward Citations)
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US2177558A
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US2237006A
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US2304448A
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Cited
US2834201A
Cited
US2666896A
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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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |