Patent US3283476A successfully refreshed from Google Patents.
US3283476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drying gaseous chlorine
Assignee: Akzo NV
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Filing: 1964-06-02
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Granted: 1966-11-08
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Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Honigh Christiaan Ger Frederik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:02
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A METHOD OF DRYING GASEOUS CHLORINE WHICH COMPRISES CONTACTING A STREAM OF WET GASEOUS CHLORINE WITH A STREAM OF SULFURIC ACID IN FIRST DRYING STEP WHILE MAINTAINING A TEMPERATURE IN SAID STEP LOWER THAN THE TEMPERATURE AT WHICH A CHLORINE HYDRATE IS FORMED FROM CHLORINE AND PURE WATER UNDER THE PRESSURE PREVAILING IN SAID STEP, SEPARATELY DISCHARGING GASEOUS CHLORINE AND SULFURIC ACID FROM SAID FIRST DRYING STEP, CONTACTING SAID DISCHARGED GASEOUS CHLORINE WITH CONCENTRATED SULFURIC ACID IN A SUBSEQUENT DRYING STEP WHILE MAINTAINING A TEMPERATURE IN SAID SUBSEQUENT STEP HIGHER THAN THE TEMPERATURE AT WHICH SOLID SULFURIC ACID HYDRATE IS CAPABLE OF SEPARATING FROM CONCENTRATED SULFURIC ACID, AND SEPARATELY DISCHARGING GASEOUS CHLORINE AND SULFURIC ACID FROM SAID SUBSEQUENT STEP, AT LEAST PART OF THE SULFURIC ACID DISCHARGED FROM SAID SUBSEQUENT DRYING STEP BEING PASSED TO SAID FIRST DRYING STEP FOR SERVING THEREIN AS THE SAID STREAM OF SULFURIC ACID WITH WHICH SAID STREAM OF WET GASEOUS CHLORINE IS CONTACTED.
Claim 2
Independent Claim
159 words
A METHOD OF DRYING GASEOUS CHLORINE WHICH COMPRISES CONTACTING A STREAM OF WET GASEOUS CHLORINE WITH A STREAM OF SULFURIC ACID IN FIRST DRYING STEP WHILE MAINTAINING A TEMPERATURE IN SAID STEP LOWER THAN THE TEMPERATURE AT WHICH A CHLORINE HYDRATE IS FORMED FROM CHLORINE AND PURE WATER UNDER THE PRESSURE PREVAILING IN SAID STEP, SEPARATELY DISCHARGING GASEOUS CHLORINE AND SULFURIC ACID FROM SAID FIRST DRYING STEP, CONTACTING SAID DISCHARGED GASEOUS CHLORINE WITH CONCENTRATED SULFURIC ACID IN A SUBSEQUENT DRYING STEP WHILE MAINTAINING A TEMPERATURE IN SAID SUBSEQUENT STEP HIGHER THAN THE TEMPERATURE AT WHICH SOLID SULFURIC ACID HYDRATE IS CAPABLE OF SEPARATING FROM CONCENTRATED SULFURIC ACID, AND SEPARATELY DISCHARGING GASEOUS CHLORINE AND SULFURIC ACID FROM SAID SUBSEQUENT STEP, AT LEAST PART OF THE SULFURIC ACID DISCHARGED FROM SAID SUBSEQUENT DRYING STEP BEING PASSED TO SAID FIRST DRYING STEP FOR SERVING THEREIN AS THE SAID STREAM OF SULFURIC ACID WITH WHICH SAID STREAM OF WET GASEOUS CHLORINE IS CONTACTED.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |