US3796884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermographic plate
Assignee: Individual
•
Filing: 1971-10-18
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Granted: 1974-03-12
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Expires: 1991-10-18
Abstract
Abstract A process for manufacturing a thermographic plate is disclosed, wherein a sensitive layer comprised of liquid crystals, is associated to a heat guiding layer made of latex and producing a screen effect perpendicularly to said sensitive layer. The thermographic plate is used for diagnosis of several cutaneous and subcutaneous affections. The invention relates also to the thermographic plate itself as well as to thermographic recording device comprising said thermographic plate and a fixture connecting at an adjustable distance said plate with a photographic camera.
Inventors
- 👤 J Tricoire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:52
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/12; G01K11/16; G01K11/165; A; A61; A61B; A61B5/00; A61B5/01; A61B5/015
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
39 words
A process according to claim 1, wherein said step of disposing is carried out by depositing only one layer of heat reticulable latex on the sensitive layer, and heating the latex layer sufficiently to give it a reticulated structure.
Claim 2
Dependent Claim
34 words
A process according to claim 1, wherein said step of disposing is carried out by sequentially depositing a plurality of discrete layers of latex paint, each having a thickness of less than 50 microns.
Claim 3
Dependent Claim
20 words
A process according to claim 3 wherein the sequential depositing of the plurality of discrete layers is effected by spraying.
Claim 4
Dependent Claim
61 words
A thermographic plate comprising, in combination a sensitive layer composed of liquid crystals; means disposed in heat conductive association with said sensitive layer for guiding heat energy incident thereon in a direction perpendicular to said sensitive layer and for opposing the diffusion of such heat in directions parallel to said seNsitive layer, said means being constituted by a layer of latex.
Claim 5
Dependent Claim
30 words
A thermographic plate according to claim 5, further comprising a flexible support layer and wherein said layer of latex is disposed between said sensitive layer and said flexible support layer.
Claim 6
Dependent Claim
26 words
A thermographic plate according to claim 6, wherein said support layer is a sheet of non-colored ethylene glycol terephthalate having a thickness less than 0.1 mm.
Claim 7
Dependent Claim
34 words
A thermographic plate according to claim 5, further comprising a flexible support layer and wherein said layer of latex and said sensitive layer are arranged on respectively opposite sides of said flexible support layer.
Claim 8
Dependent Claim
16 words
A thermographic plate according to claim 5, wherein said layer of latex forms a support layer.
Claim 9
Dependent Claim
23 words
A thermographic plate according to claim 5, wherein the liquid crystals are dispersed in said layer which of latex forms said sensitive layer.
Claim 10
Dependent Claim
20 words
A thermographic plate according to claim 5, wherein said layer of latex is a single layer of a heat-reticulated latex.
Claim 11
Dependent Claim
33 words
A thermographic plate according to claim 5, wherein said layer of latex is composed of a plurality of discrete layers of black latex paint each having a thickness of less than 50 microns.
Claim 12
Dependent Claim
14 words
A thermographic plate according to claim 5, wherein said plate has a self-sticking side.
Claim 13
Dependent Claim
35 words
A thermographic plate according to claim 5 further comprising a support layer and wherein there is a plurality of sensitive layers which are different from one another and which are associated with said support layer.
Claim 14
Dependent Claim
22 words
A medical device comprising: a thermographic plate as defined in claim 5 and a support instrument in which said plate is mounted.
Claim 15
Dependent Claim
14 words
A medical device according to claim 15, wherein said support instrument is a probe.
Claim 16
Dependent Claim
14 words
A medical device according to claim 15, wherein said support instrument is a retractor.
Claim 17
Dependent Claim
64 words
A medical device according to claim 15, wherein said support instrument is a transport plate, and said thermographic plate is fixed at its periphery to said transport plate to form therewith an inflatable unit presenting a sealed space between said thermographic plate and said transport plate, and further comprising a valve connected to communicate with said space for enabling said unit to be inflated.
Claim 18
Dependent Claim
15 words
A medical device according to claim 15, wherein said support instrument is a peripheral frame.
Claim 19
Dependent Claim
17 words
A medical device according to claim 15, wherein the liquid crystals of said sensitive layer are encapsulated.
Claim 20
Dependent Claim
18 words
A medical device according to claim 15, wherein said sensitive layer is free of any surface protective coating.
Claim 21
Dependent Claim
38 words
A medical device according to claim 15, further comprising a fixed arm on which said support instrument is removably mounted, said arm being provided with means for mounting a photographic camera at adjustable distances from the thermographic plate.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |