Patent US3475304A successfully refreshed from Google Patents.
US3475304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic protection of reinforcing metals in electrolytic cells
Assignee: Hooker Chemical Corp
•
Filing: 1966-03-28
•
Granted: 1969-10-28
•
Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 John E Currey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
C; C25; C25B; C25B15/00; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/10; C25B9/00; C25B9/17; C25B9/19; C23F2201/00; C23F2201/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US101248A
Cited
US2890157A
Cited
US822109A
Cited
US1341516A
Cited
US1866065A
Cited
US2834728A
Cited
US3081252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |