US3067048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing sintered beryllium oxide and resultant products
Assignee: Pechiney SA
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Filing: 1959-12-08
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Granted: 1962-12-04
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Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Gion Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:06
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B35/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
A SINTERED BERYLLIUM OXIDE HAVING AN OPEN POROSITY OF SUBSTANTIALLY ZERO, AND A DENSITY NOT LESS THAN ABOUT 2.85. SAID SINTERED BERYLLIUM OXIDE CONTAINING AN ALKALINE EARTH METAL OXIDE, THE AMOUNT OF ALKALINE EARTH METAL OXIDE PRESENT IN THE SINTERED PRODUCT BEING ABOUT 0.6% BY WEIGHT, SAID SINTERED BERYLLIUM OXIDE BEING SUBSTANTIALLY FREE OF IMPURITIES.
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |