US3738860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell or battery housing of synthetic resin for maintenance free batteries
Assignee: Robert Bosch GmbH
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Filing: 1971-03-05
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Granted: 1973-06-12
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Expires: 1991-03-05
Abstract
Abstract FOR HOUSING A CELL OR BATTERY, WHERE A MAINTENANCEFREE LIFETIME OF AT LEAST THREE YEARS IS DESIRED AND THE HOUSING SHOULD BE OF SYNTHETIC RESIN, THE WATER TRANSMISSION RATE OF THE MATERIAL OF WHICH THE HOUSING IS CONSTRUCTED-WHEN MEASURED AT 20*C. OF A FILM 40 MICRONS THICK WITH A RELATIVE HUMIDITY AT 85% ON ONE SIDE OF THE FILM AND 0% ON THE OTHER-MUST NOT EXCEED 10 GM.-2D.-1, AND PREFERABLY SHOULD NOT EXCEED 3 GM.-2D.-1. THE HOUSING MAY CONSIST OF TWO LAYERS, ONE OF WHICH HAS A LOW WATER-TRANSMISSION RATE AND THE OTHER OF WHICH HAS A HIGH RESISTANCE TO MECHANICAL STRESS.
Inventors
- 👤 Roda E Von
- 👤 E Trankle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/14; H01M50/141; H01M50/116; H01M50/121; H01M50/124; H01M50/126; H01M50/129; H01M50/131; H01M50/133; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |