US3346348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of be (bh4)2 3n2h4
Assignee: Dow Chemical Co
•
Filing: 1963-10-14
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Granted: 1967-10-10
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Lz F Lamoria
- 👤 Paul F Reigler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
A BERYLLIUM BOROHYDRIDE HYDRAZINE COORDINATION COMPOUND CORRESPONDING TO THE EMPIRICAL FORMULA
Claim 2
Dependent Claim
11 words
A BERYLLIUM BOROHYDRIDE HYDRAZINE COORDINATION COMPOUND CORRESPONDING TO THE EMPIRICAL FORMULA
Claim 3
Dependent Claim
95 words
A PROCESS FOR PREPARING A BERYLLIUM BOROHYDRIDE HYDRAZINE COORDINATION COMPOUND CORRESPONDING TO THE EMPIRICAL FORMULA BE(BH4)2 3N2H4 WHICH COMPRISES; (A) DISSOLVING BERYLLIUM BOROHYDRIDE IN AN ETHER AT A WEIGHT PROPORTION OF BE(BH4)2 ALKYL ETHER OF FROM ABOUT 0.01-2/100, (B) INTRODUCING HYDRAZINE INTO THE ETHER SOLUTION OF BE(BH4)2 THEREBY TO PRECIPITATE A BERYLLIUM BOROHYDRIDE HYDRAZINE COORDINATION COMPOUND CORRESPONDING TO THE EMPIRICAL FORMULA BE(BH4)2$3N2H4, THE AMOUNT OF HYDRAZINE ADDED TO SAID SOLUTION BASED ON THE GRAME-MOLE RATIO OF N2H4/BE(BH4)2 BEING AT A MAXIMUM ABOUT 3, AND (C) SEPARATING THE SO-PRECIPITATED BE(BH4)2$3N2H4 FROM THE RESIDUAL LIQUID REACTION MASS.
Claim 4
Dependent Claim
95 words
A PROCESS FOR PREPARING A BERYLLIUM BOROHYDRIDE HYDRAZINE COORDINATION COMPOUND CORRESPONDING TO THE EMPIRICAL FORMULA BE(BH4)2 3N2H4 WHICH COMPRISES; (A) DISSOLVING BERYLLIUM BOROHYDRIDE IN AN ETHER AT A WEIGHT PROPORTION OF BE(BH4)2 ALKYL ETHER OF FROM ABOUT 0.01-2/100, (B) INTRODUCING HYDRAZINE INTO THE ETHER SOLUTION OF BE(BH4)2 THEREBY TO PRECIPITATE A BERYLLIUM BOROHYDRIDE HYDRAZINE COORDINATION COMPOUND CORRESPONDING TO THE EMPIRICAL FORMULA BE(BH4)2$3N2H4, THE AMOUNT OF HYDRAZINE ADDED TO SAID SOLUTION BASED ON THE GRAME-MOLE RATIO OF N2H4/BE(BH4)2 BEING AT A MAXIMUM ABOUT 3, AND (C) SEPARATING THE SO-PRECIPITATED BE(BH4)2$3N2H4 FROM THE RESIDUAL LIQUID REACTION MASS.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |