Patent US3486971A successfully refreshed from Google Patents.
Patent US3018288A successfully refreshed from Google Patents.
US3018288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of
Assignee: —
•
Filing: —
•
Granted: 1962-01-23
•
Expires: 1979-01-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:53
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A PROCESS FOR THE PRODUCTION OF CYANURIC CHLORIDE BY PASSING CYANOGEN CHLORIDE OVER AN ACTIVE CARBON, THE IMPROVEMENT WHICH COMPRISES USING AS SAID ACTIVE CARBON ONE WHICH HAS BEEN TREATED WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, ACETIC, FLUORIC, PROPIONIC, LACTIC AND SULFURIC ACIDS UNTIL THE OXIDES, HYDROXIDES, AND SALTS OF THE METALS BELONGING TO GROUPS 2 AND 1 OF THE PERIODIC TABLE CONTAINED IN SAID ACTIVE CARBON ARE REMOVED BY SAID ACID TREATMENT AND THE PH OF AN AQUEOUS EXTRACT OBTAINED BY THE EXTRACTION OF THE COMBUSTION ASH OF SAID ACTIVE CARBON WITH WATER IN AN AMOUNT ABOUT 100 TIMES BY WEIGHT THEREOF REACHES WITHIN THE RANGE THAT IS NOT PERCEPTIBLE IN PHENOLPHTHALEIN.
Claim 2
Dependent Claim
118 words
IN A PROCESS FOR THE PRODUCTION OF CYANURIC CHLORIDE BY PASSING CYANOGEN CHLORIDE OVER AN ACTIVE CARBON, THE IMPROVEMENT WHICH COMPRISES USING AS SAID ACTIVE CARBON ONE WHICH HAS BEEN TREATED WITH AN ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, ACETIC, FLUORIC, PROPIONIC, LACTIC AND SULFURIC ACIDS UNTIL THE OXIDES, HYDROXIDES, AND SALTS OF THE METALS BELONGING TO GROUPS 2 AND 1 OF THE PERIODIC TABLE CONTAINED IN SAID ACTIVE CARBON ARE REMOVED BY SAID ACID TREATMENT AND THE PH OF AN AQUEOUS EXTRACT OBTAINED BY THE EXTRACTION OF THE COMBUSTION ASH OF SAID ACTIVE CARBON WITH WATER IN AN AMOUNT ABOUT 100 TIMES BY WEIGHT THEREOF REACHES WITHIN THE RANGE THAT IS NOT PERCEPTIBLE IN PHENOLPHTHALEIN.
References Cited (Backward Citations)
NL13208C
Cited
US2753346A
Cited
US2872446A
Cited
GB191517731A
Cited
US2003277A
Cited
US2300600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |