US3289291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for metallizing ceramics
Assignee: Varian Medical Systems Inc
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Filing: 1963-05-17
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Granted: 1966-12-06
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Expires: 1983-05-17
Abstract
No abstract record available.
Inventors
- 👤 Reed Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:03
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B37/00; C04B37/003; C04B37/006; C04B37/02; C04B37/023; C04B37/026; C04B41/45; C04B41/50; C04B41/51; C04B41/5122; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/658; C04B2235/6583; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/50; C04B2237/55; C04B2237/60; C04B2237/70; C04B2237/708; C04B2237/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHHOD OF FORMING A VACUUM TIGHT METALLIZING SURFACE ON A HIGH ALUMINA CERAMIC BODY, SAID METALLIZING SURFACE BEING INERT TO HALOGEN GASES, COMPRISING THE STEPS OF: COATING SAID CERAMIC BODY WITH A METALLIZING PAINT WHICH INCLUDES A VOLATILE SOLVENT IN WHICH IS SUSPENDED A POWDERED MIXTURE COMPRISING BY WEIGHT A MAJORITY OF PLATINUM AND SUFFICIENT QUANTITY OF MANGANESE AND SILICA TO FORM A VISCOUS MANGANESE-SILICA-ALUMINA MELT, AND FIRING THE COATED CERAMIC BODY AT A TEMPERATURE BETWEEN 1200C. AND 1300*C. IN AN OXIDIZING ATMOSPHERE,
Claim 2
Dependent Claim
84 words
THE METHHOD OF FORMING A VACUUM TIGHT METALLIZING SURFACE ON A HIGH ALUMINA CERAMIC BODY, SAID METALLIZING SURFACE BEING INERT TO HALOGEN GASES, COMPRISING THE STEPS OF: COATING SAID CERAMIC BODY WITH A METALLIZING PAINT WHICH INCLUDES A VOLATILE SOLVENT IN WHICH IS SUSPENDED A POWDERED MIXTURE COMPRISING BY WEIGHT A MAJORITY OF PLATINUM AND SUFFICIENT QUANTITY OF MANGANESE AND SILICA TO FORM A VISCOUS MANGANESE-SILICA-ALUMINA MELT, AND FIRING THE COATED CERAMIC BODY AT A TEMPERATURE BETWEEN 1200C. AND 1300*C. IN AN OXIDIZING ATMOSPHERE,
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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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |