Patent US2679451A successfully refreshed from Google Patents.
US2679451A
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Black granular lead peroxide and process therefor
Assignee: Olin Industries Inc
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Filing: 1951-04-17
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Granted: 1954-05-25
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Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Edward A Staba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:15
CPC Classifications
C; C01; C01G; C01G21/00; C01G21/02; C01G21/08; C01P; C01P2004/00; C01P2004/50; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/12; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
22 words
BLACK, FREE-FLOWING LEAD PEROXIDE HAVING AN APPARENT DENSITY OF APPROXIMATELY 2.14 GRAMS PER CUBIC CENTIMETER AND CONTAINING AT LEAST 95 PERCENT PBO2.
Claim 2
Dependent Claim
22 words
BLACK, FREE-FLOWING LEAD PEROXIDE HAVING AN APPARENT DENSITY OF APPROXIMATELY 2.14 GRAMS PER CUBIC CENTIMETER AND CONTAINING AT LEAST 95 PERCENT PBO2.
Claim 3
Dependent Claim
75 words
THE PROCESS OF MAKING LEAD PEROXIDE OF LARGE PARTICLES SIZE AND HIGH APPARENT DENSITY WHICH COMPRISES OXIDIZING A DIVALENT LEAD COMPOUND TO AN INTERMEDIATE STAGE OF OXIDATION BY TREATING A SOLUTION OF SUCH COMPOUND WITH AN OXIDIZING AGENT IN THE PRESENCE OF AN ALKALI HYDROXIDE AT AN ELEVATED TEMPERATURE, REMOVING THE INTERMEDIATE COMPOUND FROM THE SOLUTION, SUSPENDING IT IN WATER AND THEN TREATING IT WITH AN OXIDIZING AGENT TO COMPLETE THE OXIDATION TO LEAD PEROXIDE.
Claim 4
Dependent Claim
75 words
THE PROCESS OF MAKING LEAD PEROXIDE OF LARGE PARTICLES SIZE AND HIGH APPARENT DENSITY WHICH COMPRISES OXIDIZING A DIVALENT LEAD COMPOUND TO AN INTERMEDIATE STAGE OF OXIDATION BY TREATING A SOLUTION OF SUCH COMPOUND WITH AN OXIDIZING AGENT IN THE PRESENCE OF AN ALKALI HYDROXIDE AT AN ELEVATED TEMPERATURE, REMOVING THE INTERMEDIATE COMPOUND FROM THE SOLUTION, SUSPENDING IT IN WATER AND THEN TREATING IT WITH AN OXIDIZING AGENT TO COMPLETE THE OXIDATION TO LEAD 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) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |