US3644359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-flowing cyanuric acids
Assignee: FMC Corp
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Filing: 1970-05-01
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Granted: 1972-02-22
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Expires: 1990-05-01
Abstract
Abstract CYANURIC ACID WHICH HAS BEEN PURIFIED BY ACID DIGESTION IS NOT FREE-FLOWING, AND IT CAKES UPON STORAGE. THIS INVENTTION PROVIDES A METHOD OF MAKING THE ACID-DIGESTED CYANURIC ACID FREE-FLOWING AND NON-CAKING.
Inventors
- 👤 Raymond N Mesiah
- 👤 Harold R Chancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:15
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/32
Claims Analysis
Total Claims: 0
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |