Patent US2806765A successfully refreshed from Google Patents.
US2806765A
Expired / Lapsed
US
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Process for production of bleaching powder
Assignee: Olin Corp
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Filing: 1953-05-20
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Granted: 1957-09-17
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Expires: 1973-05-20
Abstract
No abstract record available.
Inventors
- 👤 Homer L Robson
- 👤 Alan C Stoneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:35
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/04; C01B11/06; C01B11/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR THE PRODUCTION OF BLEACHING POWDER OF HIGH CHLORIDE AND LOW WATER CONTENT WHICH COMPRISES FLASH CHLORINATING MOIST HYDRATED LIME AT A TEMPERATURE OF ABOUT 125* TO 155* F. WITH DILUTE CHLORINE GAS SO THAT ABOUT ONE THIRD OF THE LIME REACTS WITH CHLORINE, FUTHER CHLORINATING THE RESULTING METERIAL WITH DILUTE CHLORINE GAS IN A MECHANICAL BLEACH CHLORINATION STEP AT A TEMPERATURE OF LESS THAN ABOUT 100* F. SO THAT UP TO ABOUT ONE THIRD MORE OF THE LIME REACTS WITH CHLORINE AND DRY ING THE RESULTING BLEACHING POWDER BY CANTACT WITH HOT AIR TO WHICH HAS BEEN ADDED AT LEAST A QUANTITY OF CHLORINE GAS EFFECTIVE TO PREVENT THE LOSS OF CHLORINE FROM THE BLEACHING POWDER DURING THE DRYING STEP AND AMOUNTING TO AT LEAST ABOUT 0.25 PERCENT.
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE PRODUCTION OF BLEACHING POWDER OF HIGH CHLORIDE AND LOW WATER CONTENT WHICH COMPRISES FLASH CHLORINATING MOIST HYDRATED LIME AT A TEMPERATURE OF ABOUT 125* TO 155* F. WITH DILUTE CHLORINE GAS SO THAT ABOUT ONE THIRD OF THE LIME REACTS WITH CHLORINE, FUTHER CHLORINATING THE RESULTING METERIAL WITH DILUTE CHLORINE GAS IN A MECHANICAL BLEACH CHLORINATION STEP AT A TEMPERATURE OF LESS THAN ABOUT 100* F. SO THAT UP TO ABOUT ONE THIRD MORE OF THE LIME REACTS WITH CHLORINE AND DRY ING THE RESULTING BLEACHING POWDER BY CANTACT WITH HOT AIR TO WHICH HAS BEEN ADDED AT LEAST A QUANTITY OF CHLORINE GAS EFFECTIVE TO PREVENT THE LOSS OF CHLORINE FROM THE BLEACHING POWDER DURING THE DRYING STEP AND AMOUNTING TO AT LEAST ABOUT 0.25 PERCENT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |