US3619611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray film marker comprising an x-ray filter and recessed indices filled with x-ray opaque material
Assignee: Individual
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Filing: 1969-11-12
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Granted: 1971-11-09
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Expires: 1989-11-12
Abstract
Abstract A marker positionable adjacent recording material and between the material and a source of X-ray radiation, the marker having a body of material relatively transparent to the radiation with a broad area depression in which recesses in the form of film identifying characters are provided. A metallic material relatively opaque to the X-ray radiation is disposed in the recesses and a cover plate of material relatively transparent to this radiation is disposed in the depression over the recesses, the plate having in an exposed surface thereof indentations corresponding to the aforementioned identifying characters.
Inventors
- 👤 Graham Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:45
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/047
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
96 words
An X-ray film marker for permanently identifying recording material exposed to X-ray radiation, comprising: a rectangular body of material transparent to said X-ray radiation, said body having a broad primary recessed area adapted to receive X-ray filter means and having secondary recesses within said primary recessed area in the form of film identifying characters in said primary area; metallic material opaque to said X-ray radiation disposed in said secondary recesses; and a cover plate disposed in said primary area over said secondary recesses and having in an exposed surface thereof indentations corresponding to said identifying characters.
Claim 2
Dependent Claim
96 words
An X-ray film marker for permanently identifying recording material exposed to X-ray radiation, comprising: a rectangular body of material transparent to said X-ray radiation, said body having a broad primary recessed area adapted to receive X-ray filter means and having secondary recesses within said primary recessed area in the form of film identifying characters in said primary area; metallic material opaque to said X-ray radiation disposed in said secondary recesses; and a cover plate disposed in said primary area over said secondary recesses and having in an exposed surface thereof indentations corresponding to said identifying characters.
Claim 3
Dependent Claim
22 words
An X-ray film marker according to claim 1, wherein said cover plate is fabricated from a material transparent to said X-ray radiation.
Claim 4
Dependent Claim
48 words
An X-ray film maker according to claim 1, wherein a filter plate of material having a characteristic transmissivity of said X-ray radiation between that of said cover plate and that of said metallic material is disposed between the adjacent surfaces of said primary area and said cover plate.
Claim 5
Dependent Claim
28 words
An X-ray film marker according to claim 3, wherein a plurality of said filter plates having differing transmissivities are disposed between said recessed surface and said cover plate.
Claim 6
Dependent Claim
37 words
An X-ray film marker according to claim 1, wherein said cover plate is fabricated from a material having a characteristIc transmissivity of said X-ray radiation between that of said metallic material and that of a transparent material.
Claim 7
Dependent Claim
25 words
An X-ray film marker according to claim 1, wherein a bonding agent is disposed between and adheres to said recessed area and said cover plate.
Claim 8
Dependent Claim
35 words
An X-ray film marker according to claim 3, wherein a bonding agent is disposed between and adheres to said recessed area and said filter plate and another between said filter plate and said cover plate.
Claim 9
Dependent Claim
61 words
An X-ray film marker according to claim 4, wherein a bonding agent is disposed between and adheres to said recessed area and an adjacent one of said plurality of said filter plates, between and adheres to said plurality of said filter plates, and between and adheres to said cover plate and an adjacent one of said plurality of said filter plates.
Claim 10
Dependent Claim
16 words
An X-ray film marker according to claim 1, wherein the opaque metallic material is an amalgam.
Claim 11
Dependent Claim
13 words
An X-ray film marker according to claim 9, wherein said amalgam includes silver.
Claim 12
Dependent Claim
27 words
An X-ray film marker according to claim 1, wherein the outer surface of said cover plate is color coded to indicate the width of said identifying characters.
Claim 13
Dependent Claim
24 words
An X-ray film marker according to claim 1, wherein said body is of a moldable synthetic material and said cover plate is anodized aluminum.
Claim 14
Dependent Claim
14 words
An X-ray film marker according to claim 3, wherein said filter plate is brass.
Claim 15
Dependent Claim
14 words
An X-ray film marker according to claim 3, wherein said filter plate is copper.
Claim 16
Dependent Claim
14 words
An X-ray film marker according to claim 5, wherein said cover plate is brass.
Claim 17
Dependent Claim
14 words
An X-ray film marker according to claim 5, wherein said cover plate is copper.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |