US3194633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of lead oxide hydroxides
Assignee: VARTA AG
•
Filing: 1961-12-11
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Granted: 1965-07-13
•
Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Voss Ernst
- 👤 Koenig Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
C; C01; C01G; C01G21/00; C01G21/02; C01G21/06; C01G21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS WHICH COMPRISES ADDING TO AN ALKALINE ALKALI METAL PLUMBITE SOLUTION, AT A TEMPERATURE NOT EXCEEDING ABOUT 50*C., AND A MINERAL ACID IN AN AMOUNT SUFFICIENT TO ADJUST THE PH OF THE SOLUTION TO WITHIN THE RANGE OF ABOUT 13.0 TO ABOUT 14.0 AND RECOVERING THE RESULTING LEAD OXIDE HYDROXIDE OF THE FORMULA 5PBO.2H2O.
Claim 2
Dependent Claim
55 words
THE PROCESS WHICH COMPRISES ADDING TO AN ALKALINE ALKALI METAL PLUMBITE SOLUTION, AT A TEMPERATURE NOT EXCEEDING ABOUT 50*C., AND A MINERAL ACID IN AN AMOUNT SUFFICIENT TO ADJUST THE PH OF THE SOLUTION TO WITHIN THE RANGE OF ABOUT 13.0 TO ABOUT 14.0 AND RECOVERING THE RESULTING LEAD OXIDE HYDROXIDE OF THE FORMULA 5PBO.2H2O.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |