US2474181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anodic coating of magnesium
Assignee: Dow Chemical Co
•
Filing: 1944-10-23
•
Granted: 1949-06-21
•
Expires: 1964-10-23
Abstract
No abstract record available.
Inventors
- 👤 Long Herbert K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB294237A
Cited
US1923502A
Cited
GB387437A
Cited
DE594062C
Cited
GB429344A
Cited
GB483798A
Cited
US2229252A
Cited
GB513837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |