Patent US2853536A successfully refreshed from Google Patents.
US2853536A
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Accumulator cells
Assignee: Tudor AB
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Filing: 1955-06-09
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Granted: 1958-09-23
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Expires: 1975-06-09
Abstract
No abstract record available.
Inventors
- 👤 Sundberg Erik Gustav
- 👤 Soderberg Karl Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:43
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/08; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A LEAD ACCUMULATOR CELL HAVING A FLUORINATED WETTING AGENT IN ITS ACTIVE MATERIAL, SAID WETTING AGENT BEING SOLUBLE IN THE ACCUMULATOR ACID AND SELECTED FROM THE GROUP CONSISTING OF A PERFLUORALKYL, PERFLUORCYCLOHEXANE AND PERFLUORALKYLCYCLOHEXANE GROUP WHICH IS COUPLED TO A SOLUBILIZING GROUP.
Claim 2
Dependent Claim
42 words
A LEAD ACCUMULATOR CELL HAVING A FLUORINATED WETTING AGENT IN ITS ACTIVE MATERIAL, SAID WETTING AGENT BEING SOLUBLE IN THE ACCUMULATOR ACID AND SELECTED FROM THE GROUP CONSISTING OF A PERFLUORALKYL, PERFLUORCYCLOHEXANE AND PERFLUORALKYLCYCLOHEXANE GROUP WHICH IS COUPLED TO A SOLUBILIZING GROUP.
References Cited (Backward Citations)
US2331396A
Cited
US1435541A
Cited
US1989312A
Cited
GB534618A
Cited
US2655471A
Cited
US2750334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |