US3154545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing cyanuric acid
Assignee: —
•
Filing: —
•
Granted: 1964-10-27
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
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
114 words
A PROCESS FOR THE MANUFACTURE OF CYANURIC ACID WHICH COMPRISES HEATING AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 180*C. TO ABOUT 520*C. IN AN INERT ATMOSPHERE AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, A UREA CYANURATE SUBSTANCE CONSISTING ESSENTIALLY OF CYANURIC ACID GRANULES COATED WITH A SOLID COATING CONSISTING SUBSTANTIALLY OF UREA CYANURATE, SAID CYANURIC ACID SUBSTANCE BEING CHARACTERIZED IN THAT THE UREA CYANURATE TO CYANURIC ACID WEIGHT RATIO IS IN THE RANGE OF FROM ABOUT 1:10 TO ABOUT 1:150, SAID HEATING BEING CARRIED OUT UNTIL SAID UREA CYANURATE SUBSTANCE IS CONVERTED TO A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CYANURIC ACID AND MIXTURES OF CYANURIC ACID AND A MINOR AMOUNT OF AMMELIDE.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE MANUFACTURE OF CYANURIC ACID WHICH COMPRISES HEATING AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 180*C. TO ABOUT 520*C. IN AN INERT ATMOSPHERE AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, A UREA CYANURATE SUBSTANCE CONSISTING ESSENTIALLY OF CYANURIC ACID GRANULES COATED WITH A SOLID COATING CONSISTING SUBSTANTIALLY OF UREA CYANURATE, SAID CYANURIC ACID SUBSTANCE BEING CHARACTERIZED IN THAT THE UREA CYANURATE TO CYANURIC ACID WEIGHT RATIO IS IN THE RANGE OF FROM ABOUT 1:10 TO ABOUT 1:150, SAID HEATING BEING CARRIED OUT UNTIL SAID UREA CYANURATE SUBSTANCE IS CONVERTED TO A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CYANURIC ACID AND MIXTURES OF CYANURIC ACID AND A MINOR AMOUNT OF AMMELIDE.
References Cited (Backward Citations)
US2943088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |