US3736190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed structures for organic electrolyte systems
Assignee: Duracell Inc USA
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Filing: 1972-03-02
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Granted: 1973-05-29
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Expires: 1992-03-02
Abstract
Abstract A HERMETICALLY SEALED BATTERY OR CELL CASING IS DESCRIBED COMPRISING A CASING ENCLOSING THE CELL OR CELLS AND PROVIDED WITH A COVER SEALED TO ITS CASING AND HAVING, IN ADDITION TO SEALED ELECTRODE AND LEADS, A FILLING PORTAL FOR INTRODUCING THE ELECTROLYTE. THE FILLING PORTAL IS PRIVIDED WITH A RESILIENT PRIMARY SEALING MEANS AT THE INTERNAL LOWER PORTION OF THE PORTAL FOR ENGAGING RESILIENTLY A MALE- THREADED CLOSURE MEANS, SAID MALE-THREADED CLOSURE MEANS BEING FUSIBLY SEALED TO THE OUTER AND UPPER PORTION OF THE PORTAL:
Inventors
- 👤 A Dey
- 👤 R Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/147; H01M50/60; H01M50/609; H01M50/627; H01M50/636; H01M50/102; H01M50/103; H01M50/172; H01M50/174; H01M50/176; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |