US3786128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of beryllium hydride
Assignee: Millennium Petrochemicals Inc
•
Filing: 1968-09-30
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Granted: 1974-01-15
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Expires: 1988-09-30
Abstract
Abstract CRUDE IMPURE BERYLLIUM HYDRIDE IS PURIFIED BY REACTING THE HYDRIDE WITH A BERYLLIUM HALIDE IN THE PRESENCE OF A LEWIS BASE TO FORM A HALOBERYLLIUM HALIDE COMPLEX AND DISPROPORTING SAID COMPLEX.
Inventors
- 👤 J Murib
- 👤 S Schott
- 👤 C Bonecutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:12
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |