Patent US4972017A successfully refreshed from Google Patents.
US3095331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Galvanic cells
Assignee: WER MVL 1998 Ltd
•
Filing: 1960-02-10
•
Granted: 1963-06-25
•
Expires: 1980-02-10
Abstract
No abstract record available.
Inventors
- 👤 Davis Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:41
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/02; H01M4/00; H01M4/02; H01M4/62; H01M6/00; H01M6/04; H01M6/06; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD OF IMPROVING THE EFFICIENCY OF A PRIMARY GALVANIC CELL OF THE KIND COMPRISING A ZINC ELECTRODE AND DEPOLARISING MIX INCLUDING MANGANESE DIOXIDE, WHICH METHOD COMPRISES INCORPORATING IN THE CELL A CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF AMINO CARBOXYLIC ACIDS AND THEIR DERIVATIVES IN A PROPORTION AT LEAST CHEMICALLY EQUIVALENT TO FOREIGN TRACE METAL IONS SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL, LEAD AND COBALT IONS, INTRODUCED INTO THE CELL AS TRACE IMPURITIES IN THE MANGANESE DIOXIDE DEPOLARISER, WHEREBY SAID FOREIGN TRACE METAL IONS ARE INCORPORATED IN THE CHELATE RINGS AND ARE THEREBY RENDERED INERT WITH RESPECT TO THE ESSENTIAL CHEMICAL REACTIONS IN THE CELL.
Claim 2
Independent Claim
109 words
A METHOD OF IMPROVING THE EFFICIENCY OF A PRIMARY GALVANIC CELL OF THE KIND COMPRISING A ZINC ELECTRODE AND DEPOLARISING MIX INCLUDING MANGANESE DIOXIDE, WHICH METHOD COMPRISES INCORPORATING IN THE CELL A CHELATING AGENT SELECTED FROM THE GROUP CONSISTING OF AMINO CARBOXYLIC ACIDS AND THEIR DERIVATIVES IN A PROPORTION AT LEAST CHEMICALLY EQUIVALENT TO FOREIGN TRACE METAL IONS SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL, LEAD AND COBALT IONS, INTRODUCED INTO THE CELL AS TRACE IMPURITIES IN THE MANGANESE DIOXIDE DEPOLARISER, WHEREBY SAID FOREIGN TRACE METAL IONS ARE INCORPORATED IN THE CHELATE RINGS AND ARE THEREBY RENDERED INERT WITH RESPECT TO THE ESSENTIAL CHEMICAL REACTIONS IN THE CELL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |