Patent US4269934A successfully refreshed from Google Patents.
US4269934A
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Tin oxide, cadmium chloride doped silver chloride electron beam recording medium
Assignee: Corning Glass Works
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Filing: 1979-10-22
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Granted: 1981-05-26
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Expires: 1999-10-22
Abstract
Abstract Electron beam-sensitive films containing silver chloride, cadmium chloride and tin oxide, and the use of such films to provide optical masks by selective film darkening with an electron beam, are described.
Inventors
- 👤 Nicholas F. Borrelli
- 👤 Peter L. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
20 words
An electron beam recording medium comprising a supported polycrystalline film containing cadmium chloride-doped silver chloride in combination with tin oxide.
Claim 2
Dependent Claim
20 words
An electron beam recording medium comprising a supported polycrystalline film containing cadmium chloride-doped silver chloride in combination with tin oxide.
Claim 3
Dependent Claim
51 words
An electron beam recording medium comprising a supported polycrystalline film which consists essentially of AgCl, CdCl 2 and SnO x , wherein x is between 1 and 2, the weight ratio AgCl/CdCl 2 is in the range of 4-24, and the weight ratio AgCl/SnO x is in the range of 5-60.
Claim 4
Dependent Claim
51 words
An electron beam recording medium comprising a supported polycrystalline film which consists essentially of AgCl, CdCl 2 and SnO x , wherein x is between 1 and 2, the weight ratio AgCl/CdCl 2 is in the range of 4-24, and the weight ratio AgCl/SnO x is in the range of 5-60.
Claim 5
Dependent Claim
27 words
An electron beam recording medium in accordance with claim 2 wherein the polycrystalline film consists essentially of a mixture of AgCl, CdCl 2 and SnO x .
Claim 6
Dependent Claim
27 words
An electron beam recording medium in accordance with claim 2 wherein the polycrystalline film consists essentially of alternating layers of SnO x and mixed AgCl-CdCl 2 .
Claim 7
Dependent Claim
24 words
An electron beam recording medium in accordance with claim 2 wherein the polycrystalline film has a thickness in the range of about 0.1-2 microns.
Claim 8
Independent Claim
65 words
A method for making an optical mask which comprises the step of selectively darkening portions of a polycrystalline film containing cadmium chloride-doped silver chloride in combination with tin oxide by exposing said portions to an electron beam for a time sufficient to obtain an optical contrast ratio of at least about 3 between the selectively darkened portions of the film and the undarkened portions thereof.
Claim 9
Independent Claim
65 words
A method for making an optical mask which comprises the step of selectively darkening portions of a polycrystalline film containing cadmium chloride-doped silver chloride in combination with tin oxide by exposing said portions to an electron beam for a time sufficient to obtain an optical contrast ratio of at least about 3 between the selectively darkened portions of the film and the undarkened portions thereof.
Claim 10
Independent Claim
101 words
A method for making an optical mask which comprises the step of selectively darkening portions of a polycrystalline film by exposing said portions to an electron beam, said film consisting essentially of AgCl, CdCl 2 and SnO x , wherein x is between 1 and 2, the weight ratio AgCl CdCl 2 is in the range 4-24, and the weight ratio AgCl/SnO x is in the range of about 5-60, said exposure being continued for a time sufficient to obtain an optical contrast ratio of at least about 3 between said darkened portions of said film and the undarkened portions thereof.
Claim 11
Independent Claim
101 words
A method for making an optical mask which comprises the step of selectively darkening portions of a polycrystalline film by exposing said portions to an electron beam, said film consisting essentially of AgCl, CdCl 2 and SnO x , wherein x is between 1 and 2, the weight ratio AgCl CdCl 2 is in the range 4-24, and the weight ratio AgCl/SnO x is in the range of about 5-60, said exposure being continued for a time sufficient to obtain an optical contrast ratio of at least about 3 between said darkened portions of said film and the undarkened portions thereof.
Claim 12
Dependent Claim
24 words
A method in accordance with claim 7 wherein the polycrystalline film consists essentially of a mixture of AgCl, CdCl 2 and SnO x .
Claim 13
Dependent Claim
24 words
A method in accordance with claim 7 wherein the polycrystalline film consists essentially of alternating layers of SnO x and mixed AgCl--CdCl 2 .
Claim 14
Dependent Claim
21 words
A method in accordance with claim 7 wherein the polycrystalline film has a thickness in the range of about 0.1-2 microns.
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) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |