US2684366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of guanamines
Assignee: —
•
Filing: —
•
Granted: 1954-07-20
•
Expires: 1971-07-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:27
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/14; C07D251/16; C07D251/18; C07C; C07C277/00; C07C277/08; C07C279/00; C07C281/00; C07C281/16; C07D251/26; C07D251/40; C07D251/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS OF PREPARING GUANAMINES WHICH COMPRISES REACTING DICYANDIAMIDE WITH A SUBSTANCE OF THE CLAS CONSISTING OF ALIPHATIC AND HOMOCYCLIC DINITRILES IN WHICH EACH CYANO RADICAL IS ATTACHED TO A CARBON ATOM OF THE CLASS CONSISTING OF CARBON ATOMS THAT ARE ATTACHED ONLY TO SINGLE BONDS AND CARBON ATOMS THAT ARE CONTAINED IN AROMATIC NUCLEI, IN THE PRESENCE OF AN ALKALI METAL HYDROXUDE, THE REACTION MIXTURE BEING DISSOLVED IN AN ALCOHOLIC SOLVENT WHOSE MOLECULE CONTAINS A HYDROXY RADICAL AND A HYDROGEN ATOM ATTACHED TO THE SAME CARBON ATOM.
Claim 2
Dependent Claim
88 words
A PROCESS OF PREPARING GUANAMINES WHICH COMPRISES REACTING DICYANDIAMIDE WITH A SUBSTANCE OF THE CLAS CONSISTING OF ALIPHATIC AND HOMOCYCLIC DINITRILES IN WHICH EACH CYANO RADICAL IS ATTACHED TO A CARBON ATOM OF THE CLASS CONSISTING OF CARBON ATOMS THAT ARE ATTACHED ONLY TO SINGLE BONDS AND CARBON ATOMS THAT ARE CONTAINED IN AROMATIC NUCLEI, IN THE PRESENCE OF AN ALKALI METAL HYDROXUDE, THE REACTION MIXTURE BEING DISSOLVED IN AN ALCOHOLIC SOLVENT WHOSE MOLECULE CONTAINS A HYDROXY RADICAL AND A HYDROGEN ATOM ATTACHED TO THE SAME CARBON ATOM.
References Cited (Backward Citations)
US2491658A
Cited
GB642409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |