US2861040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of chlorine from chlorinewater solutions
Assignee: Hooker Chemical Corp
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Filing: 1955-02-28
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Granted: 1958-11-18
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Donald A Buchanan
- 👤 Robert H Miller
- 👤 Joseph E Thornberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:21
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C01; C01B; C01B7/00; C01B7/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN A METHOD FOR REMOVAL OF RESIDUAL CHLORINE FROM CHLORINE-WATER WHEREIN SAID CHLORINE-WATER IS PASSED THROUGH A DESORPTION SYSTEM, THE IMPROVEMENT WHICH COMPRISES: ADDING AN OXIDIZABLE SULFUR COMPOUND TO SAID CHLORINE-WATER BEING MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 60 AND 100 DEGREES CENTIGRADE AND SEPARATING THE GASEOUS CHLORINE AND THE DECHLORINATED WATER SO PRODUCED.
Claim 2
Dependent Claim
54 words
IN A METHOD FOR REMOVAL OF RESIDUAL CHLORINE FROM CHLORINE-WATER WHEREIN SAID CHLORINE-WATER IS PASSED THROUGH A DESORPTION SYSTEM, THE IMPROVEMENT WHICH COMPRISES: ADDING AN OXIDIZABLE SULFUR COMPOUND TO SAID CHLORINE-WATER BEING MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 60 AND 100 DEGREES CENTIGRADE AND SEPARATING THE GASEOUS CHLORINE AND THE DECHLORINATED WATER SO PRODUCED.
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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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |