US2442223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the corrosion resistance of chromium alloys
Assignee: General Electric Co
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Filing: 1944-09-22
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Granted: 1948-05-25
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Expires: 1964-09-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert H Uhlig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/80; C21; C21D; C21D3/00; C21D3/02; C21D3/04; C23C8/06; C23C8/08; C23C8/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854
Claims Analysis
Total Claims: 0
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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) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |