Patent US3030177A successfully refreshed from Google Patents.
US3030177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous multi-stage process for production of dibasic calcium hypochlorite
Assignee: Pennwalt Corp
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Filing: 1958-09-15
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Granted: 1962-04-17
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Expires: 1978-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph C Mohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:55
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/04; C01B11/06; C01B11/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A CONTINUOUS TWO-STAGE PROCESS FOR THE PRODUCTION OF DIBASIC CALCIUM HYPOCHLORITE BY THE REACTION OF HYDRATED LIME AND HYPOCHLORITE IONS COMPRISING IN A FIRST STAGE, CONTINUOUSLY PROPORTIONING A SOLID FINELY-DIVIDED HYDRATED LIME INTO A RECYCLE STREAM OF DIBASIC CALCIUM HYPOCHLORITE SLURRY FREE OF UNCOMBINED HYPOCHLORITE IONS AND INTIMATELY MIXING THEM CONTINUOUSLY TO FORM A LIMEDIBASIC CALCIUM HYPOCHLORITE SLURRY CONTAINING NOT IN EXCESS OF 25% BY WEIGHT OF HYDRATED LIME, CONTINUOUSLY INTRODUCING THE SAID LIME-DIBASIC SLURRY INTO A SECOND STAGE OF THE PROCESS, CONTINUOUSLY PROPORTINING INTO THE SECOND STAGE AN AQUEOUS SOLUTION OF HYPOCHLORITE IONS IN AN AMOUNT TO PROVIDE AN EXCESS OF 1 TO 15% BY WEIGHT LIME OVER THE THEORETICAL AMOUNT REQUIRED TO REACT WITH ALL OF THE HYPOCHLORITE IONS AND INTIMATELY MIXING THE SAID IONS WITH THE SAID LIME-DIBASIC SLURRY TO FORM ADDITIONAL DIBASIC CALCIUM HYPOCHLORITE AND CONTAINUING THE REACTION OF THE SAID LIME WITH THE SAID HYPOCHLORITE IONS FOR AT LEAST 2 HOURS, CONTINUOUSLY INTRODUCING SODIUM CHLORIDE INTO EITHER OF THE PROCESS STAGE, AND THEREAFTER CONTINUOUSLY WITHDRAWING A SLURRY OF DIBASIC CALCIUM HYPOCHLORITE FREE OF UNCOMBINED HYPOCHLORITE IONS WHICH IS DIVIDED INTO A
Claim 2
Dependent Claim
186 words
A CONTINUOUS TWO-STAGE PROCESS FOR THE PRODUCTION OF DIBASIC CALCIUM HYPOCHLORITE BY THE REACTION OF HYDRATED LIME AND HYPOCHLORITE IONS COMPRISING IN A FIRST STAGE, CONTINUOUSLY PROPORTIONING A SOLID FINELY-DIVIDED HYDRATED LIME INTO A RECYCLE STREAM OF DIBASIC CALCIUM HYPOCHLORITE SLURRY FREE OF UNCOMBINED HYPOCHLORITE IONS AND INTIMATELY MIXING THEM CONTINUOUSLY TO FORM A LIMEDIBASIC CALCIUM HYPOCHLORITE SLURRY CONTAINING NOT IN EXCESS OF 25% BY WEIGHT OF HYDRATED LIME, CONTINUOUSLY INTRODUCING THE SAID LIME-DIBASIC SLURRY INTO A SECOND STAGE OF THE PROCESS, CONTINUOUSLY PROPORTINING INTO THE SECOND STAGE AN AQUEOUS SOLUTION OF HYPOCHLORITE IONS IN AN AMOUNT TO PROVIDE AN EXCESS OF 1 TO 15% BY WEIGHT LIME OVER THE THEORETICAL AMOUNT REQUIRED TO REACT WITH ALL OF THE HYPOCHLORITE IONS AND INTIMATELY MIXING THE SAID IONS WITH THE SAID LIME-DIBASIC SLURRY TO FORM ADDITIONAL DIBASIC CALCIUM HYPOCHLORITE AND CONTAINUING THE REACTION OF THE SAID LIME WITH THE SAID HYPOCHLORITE IONS FOR AT LEAST 2 HOURS, CONTINUOUSLY INTRODUCING SODIUM CHLORIDE INTO EITHER OF THE PROCESS STAGE, AND THEREAFTER CONTINUOUSLY WITHDRAWING A SLURRY OF DIBASIC CALCIUM HYPOCHLORITE FREE OF UNCOMBINED HYPOCHLORITE IONS WHICH IS DIVIDED INTO A
References Cited (Backward Citations)
US2441337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |