Patent US2965443A successfully refreshed from Google Patents.
US2965443A
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Process for production of calcium hypochlorite bleach liquor
Assignee: Hooker Chemical Corp
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Filing: 1958-08-13
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Granted: 1960-12-20
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Expires: 1978-08-13
Abstract
No abstract record available.
Inventors
- 👤 Wesley M Osborne
- 👤 Jr Dexter Edge
- 👤 Arthur D Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:59
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/04; C01B11/06; C01B11/064; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/034
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF CALCIUM HYPOCHLORITE BLEACH LIQUOR WHICH COMPRISES: MIXING A CONTROLLED LIME SLURRY FEED AND A CONTROLLED CHLORINE FEED, PASSING SAID MIXTURE THROUGH A RETENTION CONDUIT FOR A TIME SUFFICIENT TO EFFECT THE DESIRED CHLORINATION, THEN PASSING SAID MIXTURE SO PRODUCED THROUGH A LIQUID CYCLONE CLASSIFIER, WITHDRAWING THE UNDERFLOW OF SAID CLASSIFIER AND RECYCLING SAID UNDERFLOW TO THE LIME SLURRY FEED, WITHDRAWING THE OVERFLOW OF SAID CLASSIFIER AND RECOVERING THE CALCIUM HYPOCHLORITE BLEACH PRODUCT SO PRODUCED, THE CONCENTRATION OF SAID PRODUCT BEING CONTROLLED BY PASSING A PORTION OF SAID PRODUCT THROUGH A MEANS TO MEASURE ELECTRICAL CONDUCTIVITY OF THE PRODUCT LIQUOR SAID MEANS PROVIDING AN IMPULSE TO AN ELECTROMETRIC CONTROLLER, SAID CONTROLLER PRODUCING A CORRECTIVE ACTION IN ACCORDANCE WITH SAID CONTROLLER SET POINT TO REPOSITION THE CHLORINE FEED VALVE THEREBY CONTROLLING THE FLOW OF CHLORINE FEED.
Claim 2
Dependent Claim
141 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF CALCIUM HYPOCHLORITE BLEACH LIQUOR WHICH COMPRISES: MIXING A CONTROLLED LIME SLURRY FEED AND A CONTROLLED CHLORINE FEED, PASSING SAID MIXTURE THROUGH A RETENTION CONDUIT FOR A TIME SUFFICIENT TO EFFECT THE DESIRED CHLORINATION, THEN PASSING SAID MIXTURE SO PRODUCED THROUGH A LIQUID CYCLONE CLASSIFIER, WITHDRAWING THE UNDERFLOW OF SAID CLASSIFIER AND RECYCLING SAID UNDERFLOW TO THE LIME SLURRY FEED, WITHDRAWING THE OVERFLOW OF SAID CLASSIFIER AND RECOVERING THE CALCIUM HYPOCHLORITE BLEACH PRODUCT SO PRODUCED, THE CONCENTRATION OF SAID PRODUCT BEING CONTROLLED BY PASSING A PORTION OF SAID PRODUCT THROUGH A MEANS TO MEASURE ELECTRICAL CONDUCTIVITY OF THE PRODUCT LIQUOR SAID MEANS PROVIDING AN IMPULSE TO AN ELECTROMETRIC CONTROLLER, SAID CONTROLLER PRODUCING A CORRECTIVE ACTION IN ACCORDANCE WITH SAID CONTROLLER SET POINT TO REPOSITION THE CHLORINE FEED VALVE THEREBY CONTROLLING THE FLOW OF CHLORINE FEED.
References Cited (Backward Citations)
US2587845A
Cited
US2889199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |