US3155902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining moisture content of dielectric materials by measuring the ratio of voltage changes at two frequencies
Assignee: Industrial Nucleonics Corp
•
Filing: 1962-11-16
•
Granted: 1964-11-03
•
Expires: 1982-11-16
Abstract
No abstract record available.
Inventors
- 👤 Walls Gordon William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A METHOD FOR THE QUANTITATIVE DETERMINATION OF AT LEAST ONE PROPERTY OF A DIELECTRIC MATERIAL, SAID METHOD COMPRISING APPLYING ELECTRICAL SIGNALS AT A PLURALITY OF DIFFERENT FREQUENCIES TO AT LEAST A PORTION OF THE MATERIAL, DERIVING SEPARATE SIGNALS EACH RESULTING FROM THE SIGNALS APPLIED AT A RESPECTIVE FREQUENCY AS THESE APPLIED SIGNALS ARE INFLUENCED BY THE MASS OF SAID MATERIAL AND THE DIELECTRIC PROPERTIES OF SAID MATERIAL AT THAT FREQUENCY, AND COMBINING SAID SEPARATE SIGNALS TO PRODUCE A CONTINUOUS RESULTANT SIGNAL THAT IS A FUNCTION OF THE RATIO OF SAID SEPARATE SIGNALS AND QUANTITATIVELY INDICATIVE OF SAID PROPERTY.
References Cited (Backward Citations)
US2527208A
Cited
GB622470A
Cited
US2535026A
Cited
US2535027A
Cited
US2576249A
Cited
US2625583A
Cited
US2744233A
Cited
US2908166A
Cited
US2920206A
Cited
US2950435A
Cited
US2929020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |