Patent US2911425A successfully refreshed from Google Patents.
US2911425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cuprous complexes of organic cyano compounds and process of making same
Assignee: Wyeth Holdings LLC
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Filing: 1953-09-14
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Granted: 1959-11-03
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Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 Scalera Mario
- 👤 Brody Frederick
- 👤 Zimmerman Charles Loos
- 👤 Ulmes August Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:11
CPC Classifications
C; C07; C07F; C07F1/00; C07F1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PROCESS OF PREPARING A CUPROUS COMPLEX OF AN ORGANIC CYANO COMPOUND WHICH COMPRISES: FORMING AN AQUEOUS SOLUTION CONTAINING A CUPRIC COPPER SALT OF AN INORGANIC ACID, AN ORGANIC CYANO COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC DINITRILES, AND OXYGENATED NITRILES, B,B''-DICYANOETHYL ETHER, CYANAMIDE AND ITS DI (LOWER-ALKYL) AND DI (CYANO-LOWER-ALKYL) DERIVATIVES, CYANOACETAMIDE, CYANOGUANIDINE AND A MILD REDUCING AGENT; HEATING SAID SOLUTION, WHEREBY REACTION IS INITIATED AND PRODUCT CUPROUS COMPLEX SALT IS PRECIPITATED; CONTINUING SAID HEATING UNTIL PRECIPITATION SUBSTANTIALLY CEASES AND COLLECTING RESULTANT PRECIPITATE.
Claim 2
Dependent Claim
87 words
THE PROCESS OF PREPARING A CUPROUS COMPLEX OF AN ORGANIC CYANO COMPOUND WHICH COMPRISES: FORMING AN AQUEOUS SOLUTION CONTAINING A CUPRIC COPPER SALT OF AN INORGANIC ACID, AN ORGANIC CYANO COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC DINITRILES, AND OXYGENATED NITRILES, B,B''-DICYANOETHYL ETHER, CYANAMIDE AND ITS DI (LOWER-ALKYL) AND DI (CYANO-LOWER-ALKYL) DERIVATIVES, CYANOACETAMIDE, CYANOGUANIDINE AND A MILD REDUCING AGENT; HEATING SAID SOLUTION, WHEREBY REACTION IS INITIATED AND PRODUCT CUPROUS COMPLEX SALT IS PRECIPITATED; CONTINUING SAID HEATING UNTIL PRECIPITATION SUBSTANTIALLY CEASES AND COLLECTING RESULTANT PRECIPITATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |