US2856428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for hydrogenating organic compounds by reacting with alkali metal borohydrides
Assignee: Individual
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Filing: 1955-07-13
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Granted: 1958-10-14
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Expires: 1975-07-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:27
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C209/00; C07C209/44; C07C209/48; C12; C12C; C12C11/00; C12C11/02; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A REAGENT FOR ECFFECTING REDUCING OF AN ORGANIC COMPOUND HAVING A REDUCIBLE FUNCTIONAL GROUP WHICH CONSISTS ESSENTIALLY OF AN ALKALI METAL BOROHYDRIDE AND A HALIDE OF A POLYVALENT METAL HAVING A VALENCE FROM THREE TO FIVE IN A LIQUID CARRIER CONTAINING AN ETHER, SAID ORGANIC COMPOUND BEING FREE FROM OLEFINIC AND ACETYLENIC BONDS.
Claim 2
Dependent Claim
53 words
A REAGENT FOR ECFFECTING REDUCING OF AN ORGANIC COMPOUND HAVING A REDUCIBLE FUNCTIONAL GROUP WHICH CONSISTS ESSENTIALLY OF AN ALKALI METAL BOROHYDRIDE AND A HALIDE OF A POLYVALENT METAL HAVING A VALENCE FROM THREE TO FIVE IN A LIQUID CARRIER CONTAINING AN ETHER, SAID ORGANIC COMPOUND BEING FREE FROM OLEFINIC AND ACETYLENIC BONDS.
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |