US4091144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article with electrically-resistive glaze for use in high-electric fields and method of making same
Assignee: RCA Licensing Corp
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Filing: 1976-05-24
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Granted: 1978-05-23
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Expires: 1996-05-24
Abstract
Abstract A substrate, such as a ceramic body, carries a layer of glaze consisting essentially of (a) an inorganic oxide glass matrix that is essentially free from ions which migrate in a high-electric field, (b) about 1 × 10 19 to 50 × 10 19 antimony cations distributed in each cubic centimeter of the glass matrix, and (c) about 4 to 30 weight percent with respect to the weight of said glaze of discrete tin-oxide particles in the antimony-containing glass matrix. The method comprises dissolving antimony, as a compound thereof, in a glass, mixing together particles of said glass and tin-oxide particles, coating the mixture on a substrate, heating the coated substrate to melt the glass particles while retaining tin oxide in discrete particulate form, and then solidifying the molten coating.
Inventors
- 👤 Joseph Dresner
- 👤 Kenneth Warren Hang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:34
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/06; H01B; H01B1/00; H01B1/14; H01C; H01C7/00; H01C7/003; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
An article of manufacture comprising a substrate carrying a layer of glaze consisting essentially of (a) an inorganic oxide glass matrix that is essentially free from ions which migrate in the presence of a highelectric field of 10 kilovolts per centimeter and higher, (b) about 1 × 10 19 to 50 × 10 19 antimony cations substantially uniformly distributed in each cubic centimeter of said glass matrix, and (c) about 4 to 30 weight % with respect to the weight of said glaze of discrete particles of tin oxide in said glass matrix.
Claim 2
Dependent Claim
93 words
An article of manufacture comprising a substrate carrying a layer of glaze consisting essentially of (a) an inorganic oxide glass matrix that is essentially free from ions which migrate in the presence of a highelectric field of 10 kilovolts per centimeter and higher, (b) about 1 × 10 19 to 50 × 10 19 antimony cations substantially uniformly distributed in each cubic centimeter of said glass matrix, and (c) about 4 to 30 weight % with respect to the weight of said glaze of discrete particles of tin oxide in said glass matrix.
Claim 3
Dependent Claim
28 words
The article defined in claim 1 wherein said tin-oxide particles consist essentially of a core that is substantially free of antimony and a thin skin containing antimony cations.
Claim 4
Dependent Claim
22 words
The article defined in claim 1 containing 4 to 16 weight % tin-oxide particles with respect to the weight of said glaze.
Claim 5
Dependent Claim
22 words
The article defined in claim 1 containing 25 to 30 weight % tin-oxide particles with respect to the weight of said glaze.
Claim 6
Dependent Claim
21 words
The article defined in claim 1 including means for applying a voltage to at least a portion of said glaze layer.
Claim 7
Dependent Claim
33 words
The article defined in claim 1 wherein said substrate is a body of electrically-insulating ceramic material that is substantially free of alkali-metal cations, and said glaze layer is up to 125 microns thick.
Claim 8
Dependent Claim
31 words
The article defined in claim 1 wherein said substrate is a body of electrically-insulating material that is essentially free of ions which migrate in the presence of an applied electric field.
References Cited (Backward Citations)
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Cited
US2717946A
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US3044901A
Cited
US3669907A
Cited
US3795499A
Cited
US3923698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |