Patent US2809749A successfully refreshed from Google Patents.
US2809749A
Expired / Lapsed
US
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Sodium container
Assignee: EIDP Inc
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Filing: 1955-06-30
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Granted: 1957-10-15
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Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Corneil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:45
CPC Classifications
B; B65; B65D; B65D45/00; B65D45/32; B65D7/00; B65D7/02; B65D7/04; B65D7/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN ARTICLE OF MANUFACTURE COMPRISING A FERROUS METAL CONTAINER, A PHOSPHATIZED SURFACE INTEGRAL WITH THE INNER WALL OF SAID CONTAINER, AND METALLIC SODIUM DISPOSED WITHIN THE CONTAINER, THE PHOSPHATIZED SURFACE PREVENTING THE ADHESION OF THE SODIUM TO THE FERROUS METAL.
Claim 2
Dependent Claim
40 words
AN ARTICLE OF MANUFACTURE COMPRISING A FERROUS METAL CONTAINER, A PHOSPHATIZED SURFACE INTEGRAL WITH THE INNER WALL OF SAID CONTAINER, AND METALLIC SODIUM DISPOSED WITHIN THE CONTAINER, THE PHOSPHATIZED SURFACE PREVENTING THE ADHESION OF THE SODIUM TO THE FERROUS METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |