US2497810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of peroxide solutions
Assignee: EIDP Inc
•
Filing: 1949-05-19
•
Granted: 1950-02-14
•
Expires: 1969-05-19
Abstract
No abstract record available.
Inventors
- 👤 Donald J Campbell
- 👤 Edward F Lefson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:07
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/03; C01B15/032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE PROCESS FOR PRODUCING HYDROGEN PEROXIDE WHICH COMPRISES REACTING A METAL PEROXIDE COMPOUND IN AQUEOUS MEDIUM WITH AN ACIDTREATED CATION-EXCHANGE SYNTHETIC RESIN, WHICH RESIN HAS BEEN SUBJECTED TO ACID TREATMENT AT LEAST TWICE THAT REQUIRED TO SUBSTANTIALLY COMPLETELY REMOVE ADSORBED ALKALI METAL IONS.
Claim 2
Dependent Claim
43 words
THE PROCESS FOR PRODUCING HYDROGEN PEROXIDE WHICH COMPRISES REACTING A METAL PEROXIDE COMPOUND IN AQUEOUS MEDIUM WITH AN ACIDTREATED CATION-EXCHANGE SYNTHETIC RESIN, WHICH RESIN HAS BEEN SUBJECTED TO ACID TREATMENT AT LEAST TWICE THAT REQUIRED TO SUBSTANTIALLY COMPLETELY REMOVE ADSORBED ALKALI METAL IONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |