US3057445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-to-ceramic seal and method of making same
Assignee: US Philips Corp
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Filing: 1958-05-23
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Granted: 1962-10-09
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Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Bronnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:01
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B37/00; C04B37/02; C04B37/023; C04B37/025; C04B37/026; C04B41/45; C04B41/50; C04B41/51; C04B41/52; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/89; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/66; C04B2235/661; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/06; C04B2237/068; C04B2237/09; C04B2237/12; C04B2237/124; C04B2237/125; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/343; C04B2237/40; C04B2237/403; C04B2237/405; C04B2237/406; C04B2237/407; C04B2237/50; C04B2237/72; C04B2237/76; C04B2237/765; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12063; Y10T428/12139; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12861; Y10T428/12868
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A SEAL STRUCTURE COMPRISING A CERANIC MEMBER, A SEALING LAYER APPLIED TO A SURFACE PORTION OF SAID CERAMIC MEMBER, SAID LAYER COMPRISING A MATRIX COMPRISING AN INTIMATE MIXTURE OF A METAL OF AN EASILY REDUCIBKE OXIDE SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL, COBALT, SILVER, IRON, GOLD, PLATINUM AND PALLADIUM, AND DIFFICULTLY REDUCIBLE METAL OXIDE HAVING A STANDARD FREE ENERGY OF FORMATION, FOR THE LOWEST STATE OF OXYGEN, IN EXCESS OF 80 KILOCALORIES/GRAM ATOM OF OXYGEN AND THE METAL OF SAID METAL OXIDE, THE RATIO FO THE METAL OF THE EASILY REDUCIBLE OXIDE IN OXIDE FORM TO SAID METAL OXIDE BEING FROM 1:20 TO 2:3 AND A METAL LAYER BONDED TO SURFACE POTION OF SAID SEALING LAYER.
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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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |