US2922698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation process
Assignee: FETTCHEMIE KARL MARX STADT VEB
•
Filing: 1957-05-21
•
Granted: 1960-01-26
•
Expires: 1977-05-21
Abstract
No abstract record available.
Inventors
- 👤 Moser Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:32
CPC Classifications
B; B01; B01J; B01J19/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
A PROCESS FOR OXIDIZING A SUBSTANCE IN LIQUID PHASE BY MEANS OF AIR, WHICH COMPRISES PLACING SAID SUBSTANCE IN AN OXIDATION APPARATUS, HEATING THE SUBSTANCE TO OXIDIZING TEMPERATURE, AND PASSING THE AIR BEFORE INTRODUCING IT INTO SAID SUBSTANCE TO BE OXIDIZED, THROUGH A LAYER OF ACTIVE CARBON ARRANGED OUTSIDE OF AND CLOSELY ADJACENT TO SAID XOIDATION APPARATUS, BUT EXCLUDING ANY CONTACT OF SAID CARBON WITH THE LIQUID PHASE INSIDE OF THE OXIDATION APPARATUS.
Claim 2
Dependent Claim
73 words
A PROCESS FOR OXIDIZING A SUBSTANCE IN LIQUID PHASE BY MEANS OF AIR, WHICH COMPRISES PLACING SAID SUBSTANCE IN AN OXIDATION APPARATUS, HEATING THE SUBSTANCE TO OXIDIZING TEMPERATURE, AND PASSING THE AIR BEFORE INTRODUCING IT INTO SAID SUBSTANCE TO BE OXIDIZED, THROUGH A LAYER OF ACTIVE CARBON ARRANGED OUTSIDE OF AND CLOSELY ADJACENT TO SAID XOIDATION APPARATUS, BUT EXCLUDING ANY CONTACT OF SAID CARBON WITH THE LIQUID PHASE INSIDE OF THE OXIDATION APPARATUS.
Claim 3
Dependent Claim
75 words
A PROCESS FOR OXIDIZING IRON FROM THE DIVALENT TO THE TRIVALENT STAGE OF OXIDATION WITH COMPRISES INTRODUCING INTO AN IRON-2-SALT SOLUTION IN AN OXIDATION APPARATUS IN SODA SOLUTION A CONTINUOUS CURRENT OF AIR PREVIOUSLY PASSED THROUGH A LAYER OF ACTIVE CARBON ARRANGED OUTSIDE OF AND CLOSELY ADJACENT TO SAID OXIDATION APPARATUS BUT EXCLUDING ANY CONTACT OF THE CARBON WITH THE LIQUID PHASE INSIDE THE OXIDATION APPARATUS, UNTIL THE DESIRED AMOUNT OF IRON-3-SALT HAS BEEN FORMED.
Claim 4
Dependent Claim
75 words
A PROCESS FOR OXIDIZING IRON FROM THE DIVALENT TO THE TRIVALENT STAGE OF OXIDATION WITH COMPRISES INTRODUCING INTO AN IRON-2-SALT SOLUTION IN AN OXIDATION APPARATUS IN SODA SOLUTION A CONTINUOUS CURRENT OF AIR PREVIOUSLY PASSED THROUGH A LAYER OF ACTIVE CARBON ARRANGED OUTSIDE OF AND CLOSELY ADJACENT TO SAID OXIDATION APPARATUS BUT EXCLUDING ANY CONTACT OF THE CARBON WITH THE LIQUID PHASE INSIDE THE OXIDATION APPARATUS, UNTIL THE DESIRED AMOUNT OF IRON-3-SALT HAS BEEN FORMED.
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) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |