US3300852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for bonding beryllium oxide to graphite
Assignee: Individual
•
Filing: 1964-02-18
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Granted: 1967-01-31
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Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 Bruin Henderikus Johannes De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:37
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD FOR BONDING A BERYLLIUM OXIDE BODY TO A BODY OF GRAPHITE HAVING A RANDOMLY ORIENTED CRYSTALLOGRAPHIC STRUCTURE WHICH COMPRISES THE STEPS OF DISPOSING SELECTED SURFACES OF SAID BERYLLIUM OXIDE BODY AND SAID GRAPHITE BODY IN ABUTTING RELATIONSHIP, INTERPOSING A THIN LAYER OF PLATINUM METAL THEREBETWEEN SAID SELECTED SURFACES, HEATING SAID ABUTTING SURFACES IN A VACUUM TO A TEMPERATURE ABOVE 1500*C. BUT BELOW 1773*C. FOR A SUFFICIENT LENGTH OF TIME TO CAUSE DIFFUSION OF THE PLATINUM INTO SAID BODIES TO BOND SAID ABUTTING SURFACES TOGETHER AND THEREAFTER SLOWLY COOLING THE BONDED JOINT TO AMBIENT TEMPERATURE.
Claim 2
Independent Claim
96 words
A METHOD FOR BONDING A BERYLLIUM OXIDE BODY TO A BODY OF GRAPHITE HAVING A RANDOMLY ORIENTED CRYSTALLOGRAPHIC STRUCTURE WHICH COMPRISES THE STEPS OF DISPOSING SELECTED SURFACES OF SAID BERYLLIUM OXIDE BODY AND SAID GRAPHITE BODY IN ABUTTING RELATIONSHIP, INTERPOSING A THIN LAYER OF PLATINUM METAL THEREBETWEEN SAID SELECTED SURFACES, HEATING SAID ABUTTING SURFACES IN A VACUUM TO A TEMPERATURE ABOVE 1500*C. BUT BELOW 1773*C. FOR A SUFFICIENT LENGTH OF TIME TO CAUSE DIFFUSION OF THE PLATINUM INTO SAID BODIES TO BOND SAID ABUTTING SURFACES TOGETHER AND THEREAFTER SLOWLY COOLING THE BONDED JOINT TO AMBIENT TEMPERATURE.
References Cited (Backward Citations)
US2264152A
Cited
US3078564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |