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US4045674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamonds
Assignee: Individual
•
Filing: 1975-11-28
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Granted: 1977-08-30
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Expires: 1995-11-28
Abstract
Abstract The invention is founded on the discovery that type IIb diamond which has been rendered electrically non-conductive by being subjected to radiation capable of inducing atomic displacements becomes electrically conductive again when subjected to ionizing radiation. The invention thus provides a method of causing an electrical current to flow through a body of type IIb diamond which has been subjected to radiation capable of inducing atomic displacements by applying an electrical potential across the body and exposing the body to ionizing radiation while maintaining an electrical potential across the body. The invention also provides a novel diamond consisting of a type IIb diamond having only a portion which has been subjected to radiation capable of inducing atomic displacements.
Inventors
- 👤 Leon Ampeir Vermeulen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:59
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/26
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
A method of causing an electrical current to flow through a body of type IIb diamond which has been subjected to radiation so as to cause atomic displacements, including the steps of applying an electrical potential across the body and exposing the body to ionizing radiation while maintaining an electrical potential across the body.
Claim 2
Independent Claim
54 words
A method of causing an electrical current to flow through a body of type IIb diamond which has been subjected to radiation so as to cause atomic displacements, including the steps of applying an electrical potential across the body and exposing the body to ionizing radiation while maintaining an electrical potential across the body.
Claim 3
Independent Claim
62 words
A method of causing an electrical current to flow through a body of type IIb diamond which has been subjected to electron bombardment radiation of energy greater than 0.3 MeV so as to cause atomic displacements, including the steps of applying an electrical potential across the body and exposing the body to ionizing radiation while maintaining an electrical potential across the body.
Claim 4
Independent Claim
62 words
A method of causing an electrical current to flow through a body of type IIb diamond which has been subjected to electron bombardment radiation of energy greater than 0.3 MeV so as to cause atomic displacements, including the steps of applying an electrical potential across the body and exposing the body to ionizing radiation while maintaining an electrical potential across the body.
Claim 5
Independent Claim
56 words
A method of detecting ionizing radiation including the steps of applying an electrical potential across a body of type IIb diamond which has been subjected to radiation so as to cause atomic displacements, exposing the body to ionizing radiation while maintaining an electrical potential across the body and monitoring the electrical current passing through the body.
Claim 6
Independent Claim
56 words
A method of detecting ionizing radiation including the steps of applying an electrical potential across a body of type IIb diamond which has been subjected to radiation so as to cause atomic displacements, exposing the body to ionizing radiation while maintaining an electrical potential across the body and monitoring the electrical current passing through the body.
Claim 7
Dependent Claim
19 words
A method as in claim 3, wherein the radiation is an electron bombardment of energy greater than 0.3 MeV.
Claim 8
Independent Claim
64 words
A method of detecting ionizing radiation including the steps of applying an electrical potential across a body of type IIb diamond which has been subjected to electron bombardment radiation of energy greater than 0.3 MeV so as to cause atomic displacements, exposing the body to ionizing radiation while maintaining an electrical potential across the body and monitoring the electrical current passing through the body.
Claim 9
Independent Claim
64 words
A method of detecting ionizing radiation including the steps of applying an electrical potential across a body of type IIb diamond which has been subjected to electron bombardment radiation of energy greater than 0.3 MeV so as to cause atomic displacements, exposing the body to ionizing radiation while maintaining an electrical potential across the body and monitoring the electrical current passing through the body.
Claim 10
Dependent Claim
46 words
A variable resistance element comprising a body of type IIb which has been subjected to radiation so as to cause atomic displacements so mounted between a pair of electrodes that an electrical potential can be applied across it and adapted to be exposed to ionizing radiation.
Claim 11
Dependent Claim
46 words
A variable resistance element comprising a body of type IIb which has been subjected to radiation so as to cause atomic displacements so mounted between a pair of electrodes that an electrical potential can be applied across it and adapted to be exposed to ionizing radiation.
Claim 12
Dependent Claim
24 words
A variable resistance element as in claim 6, wherein the radiation causing atomic displacements is an electron bombardment of energy greater than 0.3 MeV.
Claim 13
Dependent Claim
33 words
An element according to claim 7 in which the body is a narrow body and is so mounted between the electrodes that the electrical potential can be applied across a narrow section thereof.
Claim 14
Dependent Claim
27 words
An element according to claim 8 wherein the body is a portion of a diamond particle and extends over the entire current flowing path between the electrodes.
Claim 15
Dependent Claim
32 words
An element according to claim 9 wherein the portion is a band and the diamond particle is so mounted between the electrodes that an electrical potential can be applied across its width.
Claim 16
Dependent Claim
17 words
An element according to claim 10 wherein the width of the band does not exceed 1 mm.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |