US2515609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing oxygen
Assignee: Chemical Process Co
•
Filing: 1947-09-22
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Granted: 1950-07-18
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Expires: 1967-09-22
Abstract
No abstract record available.
Inventors
- 👤 Gordon F Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:45
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0031; B01J; B01J41/00; B01J41/04; B01J47/00; B01J47/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE METHOD OF REMOVING AVAILABLE OXYGEN FROM A LIQUID CONTAINING SUCH OXYGEN WHICH COMPRISES PROVIDING A GRANULAR BED OF A COMPLEX OF AN ACID ABSORBING ANION ACTIVE RESIN AND A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF COPPER HAVING A VALENCE OF LESS THAN TWO AND ZERO VALENT SILVER, WHEREBY A SUBSTANTIALLY INSOLUBLE COMPOSITION IS FORMED IN SAID LIQUID BY SAID AVAILABLE OXYGEN WITH SAID COMPLEX; WHEN SAID COMPLEX HAS LOST CAPACITY TO REMOVE SAID OXYGEN, RESTORING SUCH CAPACITY BY REGENERATION WITH AN AQUEOUS SOLUTION OF A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL HYDROSULFITE AND AN ALKALI METAL FORMALDEHYDE SULFOXYLATE; AND AGAIN UTILIZING THE REGENERATED COMPLEX FOR FURTHER OXYGEN REMOVAL FROM SAID LIQUID.
Claim 2
Independent Claim
119 words
THE METHOD OF REMOVING AVAILABLE OXYGEN FROM A LIQUID CONTAINING SUCH OXYGEN WHICH COMPRISES PROVIDING A GRANULAR BED OF A COMPLEX OF AN ACID ABSORBING ANION ACTIVE RESIN AND A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF COPPER HAVING A VALENCE OF LESS THAN TWO AND ZERO VALENT SILVER, WHEREBY A SUBSTANTIALLY INSOLUBLE COMPOSITION IS FORMED IN SAID LIQUID BY SAID AVAILABLE OXYGEN WITH SAID COMPLEX; WHEN SAID COMPLEX HAS LOST CAPACITY TO REMOVE SAID OXYGEN, RESTORING SUCH CAPACITY BY REGENERATION WITH AN AQUEOUS SOLUTION OF A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL HYDROSULFITE AND AN ALKALI METAL FORMALDEHYDE SULFOXYLATE; AND AGAIN UTILIZING THE REGENERATED COMPLEX FOR FURTHER OXYGEN REMOVAL FROM SAID LIQUID.
References Cited (Backward Citations)
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Cited
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US2198378A
Cited
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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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |