US2750657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a metal electrode to a high permittivity ceramic
Assignee: GE Healthcare UK Ltd
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Filing: 1952-04-21
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Granted: 1956-06-19
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Expires: 1972-04-21
Abstract
No abstract record available.
Inventors
- 👤 John M Herbert
- 👤 Best Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H; H01; H01B; H01B1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF MANUFACTURING A METAL ELECTRODE ON A SINTERED CERAMIC BODY, WHICH COMPRISES PROVIDING A LAYER OF HOMOGENEOUS MIXTURE OF CERAMIC-FORMING MATERIALS SUBSTANTIALLY CORRESPONDING TO TWO MOLECULAR PROPORTIONS OF BARIUM OXIDE, TWO MOLECULAR PROPORTIONS OF TITANIUM DIOXIDE AND 0.1 TO 1.5 MOLECULAR PROPORTIONS OF MAGNESIUM OXIDE, APPLYING TO SAID LAYER A LAYER OF FINELY DIVIDED BASE METAL SELECTED FFROM THE CLASS CONSISTING OF NICKEL, TANTALUM, IRON, COBALT, CHROMINUM, MANGANESE, COLUMBIUM AND VANADIUM WHICH SINTERS AT THE HIGH TEMPERATURE OF WHICH THE CERAMIC FORMING MATERIAL ARE RAISED FOR FORMATION OF SAID CERAMIC BODY BUT DOES NOT REACT THEREWITH, AND HEATING THE ASSEMBLED LAYER TO SAID HIGH TEMPERATURE IN AN INERT ATMOSPHERE, THEREBY FORMING SAID CERAMIC BODY AND SINTERING SAID LAYER OF FINELY DIVIDED BASE METAL, THE COMPOSITION OF THE CERAMIC MATERIAL BEING SUCH THAT IT REMAINS AT ELECTRICAL INSULATOR AT ROOM TEMPERATURE AFTER SAID BODY HAS BEEN FORMED AT SAID HIGH TEMPERATURE IN THE COMPLETE ABSENCE OF OXYGEN.
Claim 2
Independent Claim
158 words
A METHOD OF MANUFACTURING A METAL ELECTRODE ON A SINTERED CERAMIC BODY, WHICH COMPRISES PROVIDING A LAYER OF HOMOGENEOUS MIXTURE OF CERAMIC-FORMING MATERIALS SUBSTANTIALLY CORRESPONDING TO TWO MOLECULAR PROPORTIONS OF BARIUM OXIDE, TWO MOLECULAR PROPORTIONS OF TITANIUM DIOXIDE AND 0.1 TO 1.5 MOLECULAR PROPORTIONS OF MAGNESIUM OXIDE, APPLYING TO SAID LAYER A LAYER OF FINELY DIVIDED BASE METAL SELECTED FFROM THE CLASS CONSISTING OF NICKEL, TANTALUM, IRON, COBALT, CHROMINUM, MANGANESE, COLUMBIUM AND VANADIUM WHICH SINTERS AT THE HIGH TEMPERATURE OF WHICH THE CERAMIC FORMING MATERIAL ARE RAISED FOR FORMATION OF SAID CERAMIC BODY BUT DOES NOT REACT THEREWITH, AND HEATING THE ASSEMBLED LAYER TO SAID HIGH TEMPERATURE IN AN INERT ATMOSPHERE, THEREBY FORMING SAID CERAMIC BODY AND SINTERING SAID LAYER OF FINELY DIVIDED BASE METAL, THE COMPOSITION OF THE CERAMIC MATERIAL BEING SUCH THAT IT REMAINS AT ELECTRICAL INSULATOR AT ROOM TEMPERATURE AFTER SAID BODY HAS BEEN FORMED AT SAID HIGH TEMPERATURE IN THE COMPLETE ABSENCE OF OXYGEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |