US3183185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen removal from water by means of ion exchanger resins
Assignee: Bayer AG
•
Filing: 1960-04-04
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Granted: 1965-05-11
•
Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Haagen Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:53
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/015; B01J41/00; B01J41/04; B01J41/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
PROCESS FOR REMOVING OXYGEN FROM OXYGEN CONTAINING WATER BY MEANS OF ION EXCHANGERS CHARGED WITH REDUCING AGENTS WHICH COMPRISES CONTACTING THE OXYGEN-CONTAINING WATER WITH A WATER-INSOLUBLE ANION EXCHANGER RESIN CONTAINING QUATERNARY AMMONIUM GROUPS TO WHICH ARE IONICALLY BONDED POLYSULFIDE IONS.
Claim 2
Dependent Claim
40 words
PROCESS FOR REMOVING OXYGEN FROM OXYGEN CONTAINING WATER BY MEANS OF ION EXCHANGERS CHARGED WITH REDUCING AGENTS WHICH COMPRISES CONTACTING THE OXYGEN-CONTAINING WATER WITH A WATER-INSOLUBLE ANION EXCHANGER RESIN CONTAINING QUATERNARY AMMONIUM GROUPS TO WHICH ARE IONICALLY BONDED POLYSULFIDE IONS.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |