Patent US3073823A successfully refreshed from Google Patents.
US3073823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of chlorinated
Assignee: —
•
Filing: —
•
Granted: 1963-01-15
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Expires: 1980-01-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:37
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A PROCESS FOR THE PRODUCTION OF CHLORISOCYANURIC ACIDS SELECTED FROM THE GROUP CONSISTING OF DI- AND TRICHLORISOCYANURIC ACID AND MIXTURES THEREOF WHEREIN CHLORINE IS LED INTO AN AQUEOUS SOLUTION OF AN ALKALI SALT OF CYANURIC ACID UNTIL AN ACID REACTION IS SET UP, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SOLUTION WITH AN ACID REACTION AN ALKALI COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIIDE, SODIUM CARBONATE, POTASSIUM CARBONATE, SODIUM BICARBONATE, POTASSIUM BICARBONATE AND MIXTURES THEREOF IN AN AMOUNT EQUIVALENT TO FROM 1 TO 30% OF THE CYANURIC ACID AND DISCONTINUING THE ADDITION OF CHLORINE AFTER THE PH VALUE OF THE SOLUTION HAS AGAIN FALLEN TO 5 TO 2.5.
Claim 2
Dependent Claim
113 words
IN A PROCESS FOR THE PRODUCTION OF CHLORISOCYANURIC ACIDS SELECTED FROM THE GROUP CONSISTING OF DI- AND TRICHLORISOCYANURIC ACID AND MIXTURES THEREOF WHEREIN CHLORINE IS LED INTO AN AQUEOUS SOLUTION OF AN ALKALI SALT OF CYANURIC ACID UNTIL AN ACID REACTION IS SET UP, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SOLUTION WITH AN ACID REACTION AN ALKALI COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIIDE, SODIUM CARBONATE, POTASSIUM CARBONATE, SODIUM BICARBONATE, POTASSIUM BICARBONATE AND MIXTURES THEREOF IN AN AMOUNT EQUIVALENT TO FROM 1 TO 30% OF THE CYANURIC ACID AND DISCONTINUING THE ADDITION OF CHLORINE AFTER THE PH VALUE OF THE SOLUTION HAS AGAIN FALLEN TO 5 TO 2.5.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |