US2945790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electroplating lead dioxide
Assignee: Pennwalt Corp
•
Filing: 1955-12-14
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Granted: 1960-07-19
•
Expires: 1975-12-14
Abstract
No abstract record available.
Inventors
- 👤 John C Grigger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:27
CPC Classifications
C; C25; C25D; C25D9/00; C25D9/04; C25D9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN THE ANODIC ELECTRODEPOSITION OF LEAD DIOXIDE FROM AN ACID AQUEOUS SOLUTION OF LEAD NITRATE AND IMPROVEMENT COMPRISING CONDUCTING THE ELECTRODEPOSITION WITH AT LEAST ABOUT 0.5 GRAM PER LITER OF AN ALKYLARLOXY POLYOXYETHYLENE ETHANOL HAVING FROM 4 TO 40 ETHYLENE OXIDE UNITS DISSOLVED IN SAID SOLUTION.
Claim 2
Dependent Claim
46 words
IN THE ANODIC ELECTRODEPOSITION OF LEAD DIOXIDE FROM AN ACID AQUEOUS SOLUTION OF LEAD NITRATE AND IMPROVEMENT COMPRISING CONDUCTING THE ELECTRODEPOSITION WITH AT LEAST ABOUT 0.5 GRAM PER LITER OF AN ALKYLARLOXY POLYOXYETHYLENE ETHANOL HAVING FROM 4 TO 40 ETHYLENE OXIDE UNITS DISSOLVED IN SAID SOLUTION.
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |