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US2905671A
Expired / Lapsed
US
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Anuric acid
Assignee: —
•
Filing: —
•
Granted: 1959-09-22
•
Expires: 1976-09-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
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
52 words
IN THE METHOD OF SEPARATING CYANURIC ACID FROM A MIXTURE THEREOF WITH AMMELIDE, UREA, AND BIUREDT, THE STEPS OF LEACHING THE MIXTURE WITH N,N-DIMETHYLFORMAMIDE WHEREBY THE CYANURIC ACID DISSOLVES IN THEN,N-DIMETHYLFORMANIDE WITHOUT SUNSTANTIAL PEPTIZATION OF THE AMMELIDE, SEPARATING THE CYANURIC ACID-CONTAINING SOLUTION FROM THE AMMELIDE, AND RECOVERING CYANURIC ACID FROM THE SOLUTION.
Claim 2
Dependent Claim
52 words
IN THE METHOD OF SEPARATING CYANURIC ACID FROM A MIXTURE THEREOF WITH AMMELIDE, UREA, AND BIUREDT, THE STEPS OF LEACHING THE MIXTURE WITH N,N-DIMETHYLFORMAMIDE WHEREBY THE CYANURIC ACID DISSOLVES IN THEN,N-DIMETHYLFORMANIDE WITHOUT SUNSTANTIAL PEPTIZATION OF THE AMMELIDE, SEPARATING THE CYANURIC ACID-CONTAINING SOLUTION FROM THE AMMELIDE, AND RECOVERING CYANURIC ACID FROM THE SOLUTION.
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |