US3661804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead dioxide stabilization
Assignee: PCI Augsburg GmbH
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Filing: 1970-04-03
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Granted: 1972-05-09
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Expires: 1990-04-03
Abstract
Abstract STABILIZATION OF THE OXIDIZING CAPACTIY OF LEAD DIOXIDE TO PREVENT ACCELERATION THEREOF CAUSED BY HEAT WHICH IS OBTAINED BY THE ADDITION OF 0.1 TO 15% BY WEIGHT, BASED ON THE LEAD DIOXIDE, OF A MULTIVALENT METAL SALT WHEREIN THE METAL IS TIN, ZINC CADMIUM, NICKEL, COBALT, MANGANESE, IRON, CHROMIUM, BISMUTH, VANADIUM, TUNGSTEN OR MOLYBDENUM.
Inventors
- 👤 Klaus L J Scholz
- 👤 Josef Psader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:51
CPC Classifications
C; C01; C01G; C01G21/00; C01G21/02; C01G21/08
Claims Analysis
Total Claims: 0
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |