US2712002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for purifying crude cyanuric
Assignee: —
•
Filing: —
•
Granted: 1955-06-28
•
Expires: 1972-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:50
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE METHOD OF PURIFYING A MIXTURE OF CYANURIC ACID AND IMPURITIES WHICH COMPRISES TREATING AN AQUEOUS SLURRY OF SAID MIXTURE WITH AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE TO SOLUBILIZE CYANURIC ACID, SEPARATING SAID SOLUBILIZED CYANURIC ACID FROM INSOLUBLE IMPURITIES, AND TREATING SAID SOLUBILIZED CYANURIC ACID WITH AN ALKALI TO FORM A CYANURATE.
Claim 2
Independent Claim
57 words
THE METHOD OF PURIFYING A MIXTURE OF CYANURIC ACID AND IMPURITIES WHICH COMPRISES TREATING AN AQUEOUS SLURRY OF SAID MIXTURE WITH AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE TO SOLUBILIZE CYANURIC ACID, SEPARATING SAID SOLUBILIZED CYANURIC ACID FROM INSOLUBLE IMPURITIES, AND TREATING SAID SOLUBILIZED CYANURIC ACID WITH AN ALKALI TO FORM A CYANURATE.
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) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |