US3602713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive moisture meter
Assignee: BILLIE G OLTMAN
•
Filing: 1970-07-08
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Granted: 1971-08-31
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Expires: 1990-07-08
Abstract
Abstract A passive moisture meter measures the number of thermal neutrons present in a material as a result of natural radiation, such as cosmic rays, to determine the moisture content of the material. The thermal neutron flux in a control region of known moisture content is also measured to determine the magnitude of the highenergy neutron flux developed by the natural radiation.
Inventors
- 👤 Jacob Kastner
- 👤 Billie G Oltman
- 👤 Yehuda Feige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:20
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/09; G01V; G01V5/00; G01V5/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
27 words
The system of claim 1 wherein, the material is soil exposed to cosmic ray action and said control region contains a substance of a known moisture content.
Claim 2
Dependent Claim
19 words
The system of claim 2 wherein, said substance in said control region is sand with a predetermined moisture content.
Claim 3
Dependent Claim
14 words
The system of claim 2 wherein, said substance in said control region is paraffin.
Claim 4
Dependent Claim
24 words
The system of claim 1 wherein, said control region is contained in an enclosure which prevents changes in the number of hydrogen atoms present.
Claim 5
Dependent Claim
17 words
The system of claim 5 wherein, said control region and said enclosure are substantially spherical in shape.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |