US3598653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed-type lead storage battery with gas recombining means
Assignee: Panasonic Holdings Corp
•
Filing: 1969-11-03
•
Granted: 1971-08-10
•
Expires: 1989-11-03
Abstract
Abstract IN A SEALED-TYPE LEAD STORAGE BATTERY, A REACTIVE ELEMENT HAVING WATERPROOFING CAPACITY AND CATALYTIC ACTIVITY IS INTERPOSED BETWEEN THE INTERIOR AND EXTERIOR GASEOUS PHASES OF THE BATTERY AND AN ELECTROLYTE-IMPREGNATED BODY IS CLOSELY ATTACHED TO THE INSIDE FACE OF THE REACTIVE ELEMENT WITH A PORTION THEREOF IMMERSED IN THE ELECTROLYTE, WHEREBY A PRESSURE RISE WITHIN THE BATTERY DUE TO THE ACCUMULATION OF EXCESS HYDROGEN AND A LOWERING OF THE POSITIVE ELECTRODE CAPACITY DUE TO SELF-DISCHARGE OF THE POSITIVE ELECTRODE CAN EFFECTIVELY BE PREVENTED WHICH COULD NOT BE SOLVED BY THE CONVENTINAL SEALING METHODS.
Inventors
- 👤 Masataro Fukuda
- 👤 Takashi Miura
- 👤 Katsuhiro Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:14
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; H01M10/342; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |