US2765339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of salicylaldoxime ethers
Assignee: Lasdon Foundation Inc
•
Filing: 1954-12-10
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Granted: 1956-10-02
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Expires: 1974-12-10
Abstract
No abstract record available.
Inventors
- 👤 Max N Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:48
CPC Classifications
C; C07; C07C; C07C249/00; C07C249/04; C07C249/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A PROCESS FOR THE PREPARATION OF AN AMINO-SUBSTITUTED SALICYLALDEHYDE ALKOXIME, THE STEP WHICH COMPRISES REDUCING NITRO-SALICYLALDEHYDE EMPLOYING STANNOUS CHLORIDE IN HYDROCHLORIC ACID AS THE REDUCING AGENT AND FORMING A STANNIC CHLORIDE COMPLEX WITH THE AMINO-SALICYLALDEHYDE OBTAINED AND REACTING SAID COMPLEX IN AN ALKALINE MEDIUM WITH AN ALKOXYLAMINE OF THE FORMULA RO-NH2 WHERE R IS A LOWER ALKYL GROUP.
Claim 2
Dependent Claim
59 words
IN A PROCESS FOR THE PREPARATION OF AN AMINO-SUBSTITUTED SALICYLALDEHYDE ALKOXIME, THE STEP WHICH COMPRISES REDUCING NITRO-SALICYLALDEHYDE EMPLOYING STANNOUS CHLORIDE IN HYDROCHLORIC ACID AS THE REDUCING AGENT AND FORMING A STANNIC CHLORIDE COMPLEX WITH THE AMINO-SALICYLALDEHYDE OBTAINED AND REACTING SAID COMPLEX IN AN ALKALINE MEDIUM WITH AN ALKOXYLAMINE OF THE FORMULA RO-NH2 WHERE R IS A LOWER ALKYL GROUP.
References Cited (Backward Citations)
US2712031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |