US2718141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-thermal element for measuring moisture in porous media
Assignee: Individual
•
Filing: 1952-01-25
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Granted: 1955-09-20
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Expires: 1972-01-25
Abstract
No abstract record available.
Inventors
- 👤 Lorenzo A Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:54
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
AN APPARATUS FOR MEASURING THE MOISTURE CONDITION OF POROUS MEDIA WHICH COMPRISES A POROUS CERAMIC CUP CONTAINING A POROUS MEDIUM, MOISTURE SENSITIVE ELECTRICAL MEANS POSITIONED WITHIN SAID POROUS CERAMIC CUP AND IN CONTACT WITH THE POROUS MEDIUM, MEANS FOR SUPPLYING ELECTRIC CURRENT TO SAID MOISTURE SENSITIVE ELECTRICAL MEANS AND MEANS RESPONSIVE TO CHANGES IN THE ELECTRICAL CHARACTERISTICS OF SAID MOISTURE SENSITIVE ELECTRICAL MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |