US2994649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrodepositing lead dioxide
Assignee: Individual
•
Filing: 1958-03-07
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Granted: 1961-08-01
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 Linwood P Morrison
- 👤 Thomas A Hale
- 👤 George W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
C; C25; C25D; C25D9/00; C25D9/04; C25D9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF PLATING LEAD DIOXIDE UPON A PASSIVE METAL SURFACE WHICH COMPRISES MAKING THE PASSIVE SURFACE THE ANODE IN A PLATING BATH CONTAINING 5 TO 65 OZ./GAL, OF LEAD NITRATE, MAINTAINING THE TEMPERATURE OF THE BATH WITHIN THE RANGE OF FROM 120 TO 190*F., MAINTAINING THE PH OF THE BATH WITHIN THE RANGE OF 1.5 TO 6.0, PASSING THE CURRENT WITHIN THE RANGE OF 100 TO 300 AMPERES SQUARE FOOT OF ANODE SURFACE THROUGH SAID BATH, AND ADDING HYDROGEN PEROXIDE THERETO TO MAINTAIN THE ANODE EFFICIENCY OF THE BATH ABOVE 85%.
Claim 2
Independent Claim
92 words
THE METHOD OF PLATING LEAD DIOXIDE UPON A PASSIVE METAL SURFACE WHICH COMPRISES MAKING THE PASSIVE SURFACE THE ANODE IN A PLATING BATH CONTAINING 5 TO 65 OZ./GAL, OF LEAD NITRATE, MAINTAINING THE TEMPERATURE OF THE BATH WITHIN THE RANGE OF FROM 120 TO 190*F., MAINTAINING THE PH OF THE BATH WITHIN THE RANGE OF 1.5 TO 6.0, PASSING THE CURRENT WITHIN THE RANGE OF 100 TO 300 AMPERES SQUARE FOOT OF ANODE SURFACE THROUGH SAID BATH, AND ADDING HYDROGEN PEROXIDE THERETO TO MAINTAIN THE ANODE EFFICIENCY OF THE BATH ABOVE 85%.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |