US2956056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing trichlorocyanuric acid
Assignee: WR Grace and Co
•
Filing: 1958-02-14
•
Granted: 1960-10-11
•
Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 John D Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:34
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE METHOD OF PREPARING TRICHLOROCYANURIC ACID BY CONTACTING AN AQUEOUS SOLUTION OF ALKALI METAL TRICYANURATE WITH CHLORINE, THE IMPROVEMENT COMPRISING ADDING THE CYANUARATE SOLUTION TO A COLD AQUEOUS SOLUTION OF CHLORINE MAINTAINED AT 0* TO 25*C., THE AMOUNT OF CHLORINE IN THE SAID SOLUTION BEING IN STOICHIOMETRIC EXCESS OVER THE AMOUNT OF ALKALI METAL CYANURATE PRESENT IN THE SAID SOLUTION AT A GIVEN TIME.
Claim 2
Dependent Claim
65 words
IN THE METHOD OF PREPARING TRICHLOROCYANURIC ACID BY CONTACTING AN AQUEOUS SOLUTION OF ALKALI METAL TRICYANURATE WITH CHLORINE, THE IMPROVEMENT COMPRISING ADDING THE CYANUARATE SOLUTION TO A COLD AQUEOUS SOLUTION OF CHLORINE MAINTAINED AT 0* TO 25*C., THE AMOUNT OF CHLORINE IN THE SAID SOLUTION BEING IN STOICHIOMETRIC EXCESS OVER THE AMOUNT OF ALKALI METAL CYANURATE PRESENT IN THE SAID SOLUTION AT A GIVEN TIME.
References Cited (Backward Citations)
US2184888A
Cited
US2607738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |