US3415726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic production of metal hydroxide
Assignee: Individual
•
Filing: 1965-03-29
•
Granted: 1968-12-10
•
Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Paul S Roller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:18
CPC Classifications
C; C25; C25B; C25B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN THE ELECTROLYTIC PRODUCTION FRM METAL ELECTRODES OF METAL HYDROXIDE IN A LIQUID IN WHICH IT IS INSOLUBLE, APPLYING REVERSING ELECTROLYTIC CURRENT TO THE ELECTRODES IN CYCLES OF SUBSTANTIAL PERIODS OF TIME, WIPING THE ELECTRODES FOR A BRIEF INTERVAL AT OR SUBSEQUENT TO EACH CURRENT REVERSAL, AND DISCONTINUING WIPING DURING THE MAJOR REMAINING PORTION OF EACH CYCLE.
Claim 2
Dependent Claim
57 words
IN THE ELECTROLYTIC PRODUCTION FRM METAL ELECTRODES OF METAL HYDROXIDE IN A LIQUID IN WHICH IT IS INSOLUBLE, APPLYING REVERSING ELECTROLYTIC CURRENT TO THE ELECTRODES IN CYCLES OF SUBSTANTIAL PERIODS OF TIME, WIPING THE ELECTRODES FOR A BRIEF INTERVAL AT OR SUBSEQUENT TO EACH CURRENT REVERSAL, AND DISCONTINUING WIPING DURING THE MAJOR REMAINING PORTION OF EACH CYCLE.
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) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |