Patent US2943088A successfully refreshed from Google Patents.
US2943088A
Expired / Lapsed
US
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Production of cyanuric acid from urea
Assignee: Individual
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Filing: 1959-06-22
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Granted: 1960-06-28
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Westfall Richard Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:20
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
99 words
A PROCESS FOR CONVERTING UREA TO A REACTION PRODUCT CONSISTING LARGELY OF CYANURIC ACID AND AMMELIDE AND CONVERTIBLE TO COMMERCIALLY PURE CYANURIC ACID BY ACID HYDROLYSIS, WHICH COMPRISES HEATING A MASS OF UREA TO A TEMPERATURE IN THE RANGE OF 240*C. TO 360*C. AT SUCH A RATE THAT THE UREA IS MOLTEN AND THEN DEAMMONIATED THROUGH A VISCOUS PLASTIC STATE TO A HARD SOLID STATE WHILE CONTINUOUSLY TUMBLING THE REACTION MASS AT SUCH A RATE OF SPEED THAT THE MATERIAL LARGELY CONVERTS INTO FREE-FLOWING GRANULES OF SOLID CRUDE CYANURIC ACID, AND REMOVING THE CRUDE CYANURIC ACID FROM THE HEAT.
Claim 2
Dependent Claim
99 words
A PROCESS FOR CONVERTING UREA TO A REACTION PRODUCT CONSISTING LARGELY OF CYANURIC ACID AND AMMELIDE AND CONVERTIBLE TO COMMERCIALLY PURE CYANURIC ACID BY ACID HYDROLYSIS, WHICH COMPRISES HEATING A MASS OF UREA TO A TEMPERATURE IN THE RANGE OF 240*C. TO 360*C. AT SUCH A RATE THAT THE UREA IS MOLTEN AND THEN DEAMMONIATED THROUGH A VISCOUS PLASTIC STATE TO A HARD SOLID STATE WHILE CONTINUOUSLY TUMBLING THE REACTION MASS AT SUCH A RATE OF SPEED THAT THE MATERIAL LARGELY CONVERTS INTO FREE-FLOWING GRANULES OF SOLID CRUDE CYANURIC ACID, AND REMOVING THE CRUDE CYANURIC ACID FROM THE HEAT.
References Cited (Backward Citations)
US2768167A
Cited
US2712491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |