US2903788A
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: 1959-09-15
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Expires: 1975-10-18
Abstract
No abstract record available.
Inventors
- 👤 Nicholas E Pryslak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:27
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
70 words
THE METHOD OF METALLIZING THE SURFACE OF A CERAMIC BODY COMPRISING THE STEPS OF: COATING SAID SURFACE WITH A MIXTURE OF FORSTERITE AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF IRON AND TUNGSTEN, THE PERCENTAGE BY WEIGHT OF FORSTERITE BEING FROM 2 TO 30% OF THE WEIGHT OF SAID IRON AND TUNGSTEN, AND FIRING SAID BODY HAVING SAID COATED SURFACE AT A TEMPERATURE BETWEEN 1450* AND 1600*C.
Claim 2
Independent Claim
70 words
THE METHOD OF METALLIZING THE SURFACE OF A CERAMIC BODY COMPRISING THE STEPS OF: COATING SAID SURFACE WITH A MIXTURE OF FORSTERITE AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF IRON AND TUNGSTEN, THE PERCENTAGE BY WEIGHT OF FORSTERITE BEING FROM 2 TO 30% OF THE WEIGHT OF SAID IRON AND TUNGSTEN, AND FIRING SAID BODY HAVING SAID COATED SURFACE AT A TEMPERATURE BETWEEN 1450* AND 1600*C.
Claim 3
Independent Claim
149 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 CONSISTING OF A HEATDECOMPOSABLE ORGANIC BINDER IN WHICH IS SUSPENDED A MIXTURE CONSISTING OF 9 PARTS BY WEIGHT OF POWDERED TUNGSTEN TO 1 PART BY WEIGHT OF POWDERED IRON TO WHICH HAS BEEN ADDED 10% POWDERED FORSTERITE RELATIVE TO THE WEIGHT OF SAID POWDERED TUNGSTEN AND POWDERED IRON; FIRING SAID BODY HAVING SAID COATED SURFACE IN HYDROGEN AT A TEMPERATURE OF ABOUT 1500*C. FOR ABOUT 5 TO 10 MINUTES TO FORM A METALLIZED TUNGSTEN-IRON AREA BONDED TO SAID SURFACE OF SAID BODY; PLATING SAID METALLIZED AREA WITH A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL; CONTACTING SAID BERYLLIA BODY TO SAID METALLIC BODY WITH SAID PLATED METALLIZED SURFACE THEREBETWEEN; AND HEATING SAID BODIES TO THE BRAZING TEMPERATURE OF SAID PLATED METAL.
Claim 4
Independent Claim
149 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 CONSISTING OF A HEATDECOMPOSABLE ORGANIC BINDER IN WHICH IS SUSPENDED A MIXTURE CONSISTING OF 9 PARTS BY WEIGHT OF POWDERED TUNGSTEN TO 1 PART BY WEIGHT OF POWDERED IRON TO WHICH HAS BEEN ADDED 10% POWDERED FORSTERITE RELATIVE TO THE WEIGHT OF SAID POWDERED TUNGSTEN AND POWDERED IRON; FIRING SAID BODY HAVING SAID COATED SURFACE IN HYDROGEN AT A TEMPERATURE OF ABOUT 1500*C. FOR ABOUT 5 TO 10 MINUTES TO FORM A METALLIZED TUNGSTEN-IRON AREA BONDED TO SAID SURFACE OF SAID BODY; PLATING SAID METALLIZED AREA WITH A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL; CONTACTING SAID BERYLLIA BODY TO SAID METALLIC BODY WITH SAID PLATED METALLIZED SURFACE THEREBETWEEN; AND HEATING SAID BODIES TO THE BRAZING TEMPERATURE OF SAID PLATED METAL.
Claim 5
Dependent Claim
44 words
A METALLIZING COMPOSITION FOR CERAMIC BODIES CONSISTING ESSENTIALLY OF: 9 PARTS BY WEIGHT OF POWDERED TUNGSTEN TO 1 PART BY WEIGHT OF POWDERED IRON AND CONTAINING POWDERED FORSTERITE WEIGHTING FROM 2 TO 30% OF THE WEIGHT OF SAID POWDERED TANGSTEN AND SAID POWDERED IRON.
Claim 6
Dependent Claim
44 words
A METALLIZING COMPOSITION FOR CERAMIC BODIES CONSISTING ESSENTIALLY OF: 9 PARTS BY WEIGHT OF POWDERED TUNGSTEN TO 1 PART BY WEIGHT OF POWDERED IRON AND CONTAINING POWDERED FORSTERITE WEIGHTING FROM 2 TO 30% OF THE WEIGHT OF SAID POWDERED TANGSTEN AND SAID POWDERED IRON.
References Cited (Backward Citations)
US2647218A
Cited
US2667427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |