Patent US2680674A successfully refreshed from Google Patents.
US2680674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stabilizing hydrogen peroxide
Assignee: National Research Development Corp UK
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Filing: 1949-09-15
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Granted: 1954-06-08
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Expires: 1969-09-15
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Cooper
- 👤 Thomas C H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:51
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD OF STABILIZATION OF CONCENTRATED LIQUID HYDROGEN PEROXIDE WHICH COMPRISES DETERMINING THE ACIDITY VALUE, ADJUSTING THE ACIDITY VALUE TO A PREDETERMINED VALUE, ADJUSTING THE ACIDITY A TRUE PH VALUE BETWEEN 3 AND 7 AND THEN INTRODUCING FROM 20 TO ABOUT 81 MILLIGRAMS OF ZINC SULPHATE PER LITRE OF HYDROGEN PEROXIDE.
Claim 2
Independent Claim
51 words
A METHOD OF STABILIZATION OF CONCENTRATED LIQUID HYDROGEN PEROXIDE WHICH COMPRISES DETERMINING THE ACIDITY VALUE, ADJUSTING THE ACIDITY VALUE TO A PREDETERMINED VALUE, ADJUSTING THE ACIDITY A TRUE PH VALUE BETWEEN 3 AND 7 AND THEN INTRODUCING FROM 20 TO ABOUT 81 MILLIGRAMS OF ZINC SULPHATE PER LITRE OF HYDROGEN PEROXIDE.
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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |