US2902756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for metallizing ceramics
Assignee: RCA Corp
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Filing: 1955-10-18
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Granted: 1959-09-08
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Expires: 1975-10-18
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Cavanaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:18
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5144; C04B41/52; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/89; H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
THE METHOD OF METALLIZING THE SURFACE OF A CERAMIC BODY COMPRISING THE STEPS OF: COATING SAID SURFACE WITH A MIXTURE OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF IRON AND TUNGSTEIN WITH SIO2 AND TIO2, SAID SIO2 AND TIO2 BEING FROM 18 TO 28% BY WEIGHT OF SAID IRON AND TUNGSTEN THE RATIO OF SAID SIO2 TO SAID TIO2 BEING ABOUT SIX TO ONE, AND FIRING SAID BODY HAVING SIAD COATED SURFACE AT A TEMPERATURE BETWEEN 1550* AND 1650*C.
Claim 2
Independent Claim
82 words
THE METHOD OF METALLIZING THE SURFACE OF A CERAMIC BODY COMPRISING THE STEPS OF: COATING SAID SURFACE WITH A MIXTURE OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF IRON AND TUNGSTEIN WITH SIO2 AND TIO2, SAID SIO2 AND TIO2 BEING FROM 18 TO 28% BY WEIGHT OF SAID IRON AND TUNGSTEN THE RATIO OF SAID SIO2 TO SAID TIO2 BEING ABOUT SIX TO ONE, AND FIRING SAID BODY HAVING SIAD COATED SURFACE AT A TEMPERATURE BETWEEN 1550* AND 1650*C.
Claim 3
Independent Claim
148 words
THE METHOD OF BONDING A BODY OF BERYLLIA TO A METALLIC BODY COMPRISING THE STEPS: COATING THE SURFACE OF SAID BERYLLIA BODY WITH A PASTE COMPRISING A HEAT-DECOMPOSABLE ORGANIC BINDER IN WHICH HAS BEEN SUSPENDED A MIXTURE OF NINE PARTS BY WEIGHT OF POWDERED TUNGSTEN TO ONE PART BY WEIGHT OF POWDERED IRON AND CONTAINING A MIXTURE OF 18% SIO2 AND 3% TIO2 RELATIVE TO THE WEIGHT OF SAID POWDERED TUNGSTEN AND POWDERED IRON; FIRING SAID BODY HAVING SAID COATED SURFACE IN HYDROGEN AT A TEMPERATURE OF 1600*C. FOR ABOUT 5 TO 10 MINUTES TO FORM A METALLIZED TUNGSTEN-IRON AREA BONDED TO SAID SURFACE OF SAID BODY; PLATING SAID METALLIC AREA WITH A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL; CONTACTING SAID BERYLIA BODY TO SAID MTALLIC BODY WITH SAID PLATED METALLIZED SURFACE THEREBETWEEN; AND HEATING SAID BODIES TO BRAZING TEMPERATURE OF SAID PLATED METAL.
Claim 4
Independent Claim
148 words
THE METHOD OF BONDING A BODY OF BERYLLIA TO A METALLIC BODY COMPRISING THE STEPS: COATING THE SURFACE OF SAID BERYLLIA BODY WITH A PASTE COMPRISING A HEAT-DECOMPOSABLE ORGANIC BINDER IN WHICH HAS BEEN SUSPENDED A MIXTURE OF NINE PARTS BY WEIGHT OF POWDERED TUNGSTEN TO ONE PART BY WEIGHT OF POWDERED IRON AND CONTAINING A MIXTURE OF 18% SIO2 AND 3% TIO2 RELATIVE TO THE WEIGHT OF SAID POWDERED TUNGSTEN AND POWDERED IRON; FIRING SAID BODY HAVING SAID COATED SURFACE IN HYDROGEN AT A TEMPERATURE OF 1600*C. FOR ABOUT 5 TO 10 MINUTES TO FORM A METALLIZED TUNGSTEN-IRON AREA BONDED TO SAID SURFACE OF SAID BODY; PLATING SAID METALLIC AREA WITH A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL; CONTACTING SAID BERYLIA BODY TO SAID MTALLIC BODY WITH SAID PLATED METALLIZED SURFACE THEREBETWEEN; AND HEATING SAID BODIES TO BRAZING TEMPERATURE OF SAID PLATED METAL.
Claim 5
Dependent Claim
56 words
A METALLIZING COMPOSITION FOR CERAMIC BODIES CONSISTING ESSENTIALLY OF NINE PARTS BY WEIGHT OF POWDERED TUNGSTEN TO ONE PART BY WEIGHT OF POWDERED IRON AND CONTAINING FROM ABOUT 18 TO 28% OF SAID TUNGSTEN AND IRON WEIGHT OF A MIXTURE OF SIO2 AND TIO2 THE RATIO OF SAID SIO2 TO TIO2 BEING ABOUT SIX TO ONE.
Claim 6
Dependent Claim
56 words
A METALLIZING COMPOSITION FOR CERAMIC BODIES CONSISTING ESSENTIALLY OF NINE PARTS BY WEIGHT OF POWDERED TUNGSTEN TO ONE PART BY WEIGHT OF POWDERED IRON AND CONTAINING FROM ABOUT 18 TO 28% OF SAID TUNGSTEN AND IRON WEIGHT OF A MIXTURE OF SIO2 AND TIO2 THE RATIO OF SAID SIO2 TO TIO2 BEING ABOUT SIX TO ONE.
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |