Patent US6044182A successfully refreshed from Google Patents.
Patent US5376800A successfully refreshed from Google Patents.
US5376800A
Expired / Lapsed
US
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High resolution track etch autoradiography
Assignee: Massachusetts Institute of Technology
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Filing: 1993-09-10
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Granted: 1994-12-27
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Expires: 2013-09-10
Abstract
Abstract A detector assembly for use in obtaining alpha-track autoradiographs, the detector assembly including a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, the detector layer being capable of recording alpha particle tracks and exhibiting evidence of the alpha tracks in response to being exposed to an etchant, the detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, the protective layer being resistant to the etchant and having a thickness of about 0.5 to 1 microns.
Inventors
- 👤 Guido Solares
- 👤 Robert G. Zamenhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:52
CPC Classifications
G; G01; G01T; G01T5/00; G01T5/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
A detector assembly for use in obtaining alpha-track autoradiographs, said detector assembly comprising: a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, said detector layer being capable of recording alpha particle tracks and exhibiting evidence of said alpha tracks in response to being exposed to an etchant, said detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, said protective layer being resistant to said etchant and having a thickness in the range of about 0.5 to 1 microns.
Claim 2
Dependent Claim
91 words
A detector assembly for use in obtaining alpha-track autoradiographs, said detector assembly comprising: a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, said detector layer being capable of recording alpha particle tracks and exhibiting evidence of said alpha tracks in response to being exposed to an etchant, said detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, said protective layer being resistant to said etchant and having a thickness in the range of about 0.5 to 1 microns.
Claim 3
Dependent Claim
15 words
The detector assembly of claim 1 wherein the substantially boron-free substrate is made of quartz.
Claim 4
Dependent Claim
15 words
The detector assembly of claim 2 wherein the substantially boron-free substrate is a quartz microslide.
Claim 5
Dependent Claim
15 words
The detector assembly of claim 1 wherein the detector layer is made of bisphenol-A polycarbonate.
Claim 6
Dependent Claim
18 words
The detector assembly of claim 1 wherein the protective layer is made from a vinylidine chloride/vinyl chloride solution.
Claim 7
Dependent Claim
16 words
The detector assembly of claim 5 wherein the protective layer is made from a polyvinylidine chloride.
Claim 8
Dependent Claim
15 words
The detector assembly of claim 1 wherein the protective layer is about 0.8 microns thick.
Claim 9
Dependent Claim
17 words
The detector assembly of claim 1 wherein the detector layer is less than about 1 micron thick.
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) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |