US2911438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen carriers and method of making them
Assignee: ANDRE VON SZOMBATHY
•
Filing: 1954-06-29
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Granted: 1959-11-03
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Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Szombathy Kalman Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:31
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/12; B01J37/14; B01J31/00; B01J31/02; B01J31/0215; B01J31/0225; C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05; C01B17/06; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/128; B01J2231/00; B01J2231/70; B01J2231/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR PRODUCING AN OXYGEN-CARRYING CATALYTIC MATERIAL WHICH COMPRISES SULFONATING A PHENOLIC COMPOUND CONTAINING A NUCLEAR SUBSTITUTED RADICAL SELECTED FROM THE GROUP CONSISTING OF AMINO, METHYL, CARBOXYL AND CHLORINE, AND TREATING AN ALKALINE AQUEOUS SOLUTION OF THE SULFONATED PRODUCT WITH MOLECULAR OXYGEN AT A TEMPERATURE AT LEAST AS HIGH AS 30* C. UNTIL ABSORPTION OF OXYGEN IS COMPLETE.
Claim 2
Dependent Claim
59 words
A PROCESS FOR PRODUCING AN OXYGEN-CARRYING CATALYTIC MATERIAL WHICH COMPRISES SULFONATING A PHENOLIC COMPOUND CONTAINING A NUCLEAR SUBSTITUTED RADICAL SELECTED FROM THE GROUP CONSISTING OF AMINO, METHYL, CARBOXYL AND CHLORINE, AND TREATING AN ALKALINE AQUEOUS SOLUTION OF THE SULFONATED PRODUCT WITH MOLECULAR OXYGEN AT A TEMPERATURE AT LEAST AS HIGH AS 30* C. UNTIL ABSORPTION OF OXYGEN IS COMPLETE.
References Cited (Backward Citations)
US1957253A
Cited
US2433394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |