US3790802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray film identification means
Assignee: Siemens AG
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Filing: 1971-10-13
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Granted: 1974-02-05
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Expires: 1991-10-13
Abstract
Abstract A material to identify images produced by X-rays or similar transmitting rays contains a layer absorbing the X-rays and has identifying markings impressed therein. According to the present invention the absorbing layer has indium as its main component.
Inventors
- 👤 N Mika
- 👤 P Grassmann
- 👤 W Reis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
G; G09; G09F; G09F3/00; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
23 words
Material in accordance with claim 1, comprising a supporting layer carrying the first-mentioned layer, the first-mentioned layer being less than 0.2 mm thick.
Claim 2
Dependent Claim
19 words
Material in accordance with claim 2, wherein said supporting layer is the inscribing area of a treatment data card.
Claim 3
Dependent Claim
34 words
Material in accordance with claim 2, wherein said supporting layer is a film band of synthetic material having a layer of glue upon one side and carrying the first-mentioned layer upon its opposite side.
Claim 4
Dependent Claim
23 words
Material in accordance with claim 1, comprising a coating adapted to clearly visualize the markings and covering the surface of the indium layer.
Claim 5
Dependent Claim
21 words
Material in accordance with claim 1, wherein said layer consists of at least 75 percent indium, while the balance includes lead.
Claim 6
Dependent Claim
21 words
Material in accordance with claim 1, wherein said layer consists of at least 75 percent indium, while the balance includes tin.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |