US2647070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making metal-to-ceramic seals
Assignee: Individual
•
Filing: 1950-11-17
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Granted: 1953-07-28
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Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 Charles V Litton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/26; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0041; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF EFFECTING A SEAL BETWEEN A METAL PART AND A CERAMIC PART WHICH COMPRISES SHAPING THE SURFACES OF SAID METAL AND CERAMIC IN THE AREAS OF CONTACT TO FIT WITHIN A TOLERANCE OF A GROUND FIT, APPLYING A COATING OF A FLUXING MATERIAL TO A THICKNESS IN THE ORDER OF .001 TO .002 INCH BETWEEN THE AREAS OF CONTACT OF SAID PARTS, AND HEATING SAID AREA OF CONTACT TO A TEMPERATURE SUFFICIENT TO FLUX SAID CERAMIC AND SAID METAL WITH SAID MATERIAL.
Claim 2
Independent Claim
84 words
THE METHOD OF EFFECTING A SEAL BETWEEN A METAL PART AND A CERAMIC PART WHICH COMPRISES SHAPING THE SURFACES OF SAID METAL AND CERAMIC IN THE AREAS OF CONTACT TO FIT WITHIN A TOLERANCE OF A GROUND FIT, APPLYING A COATING OF A FLUXING MATERIAL TO A THICKNESS IN THE ORDER OF .001 TO .002 INCH BETWEEN THE AREAS OF CONTACT OF SAID PARTS, AND HEATING SAID AREA OF CONTACT TO A TEMPERATURE SUFFICIENT TO FLUX SAID CERAMIC AND SAID METAL WITH SAID MATERIAL.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |