Patent US3728283A successfully refreshed from Google Patents.
Patent US3087003A successfully refreshed from Google Patents.
US3087003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High rate primary batteries
Assignee: Union Carbide Corp
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Filing: 1959-06-16
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Granted: 1963-04-23
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Expires: 1979-06-16
Abstract
No abstract record available.
Inventors
- 👤 George R Drengler
- 👤 Milton B Clark
- 👤 Robert E Stark
- 👤 Theodore R Beatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:54
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0402; H01M4/0404; H01M4/043; H01M4/0433; H01M4/64; H01M4/70; H01M4/72; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD OF FABRICATING DUPLEX ELECTRODES FOR USE IN PRIMARY BATTERIES, COMPRISING SECURING A THIN EXPANDED METALLIC GRID TO ONE FACE OF AN ELECTRONICALLY-CONDUCTIVE, ELECTROCHEMICALLY INERT METALLIC SEPARATOR OF A SIZE SLIGHTLY LARGER THAN SAID THIN EXPANDED METALLIC GRID, COMPRESSING THROUGH AND ONTO SAID GRID AND SAID FACE OF SAID SEPARATOR AT A HIGH PRESSURE AN ELECTROPOSITIVE OXIDE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILVER OXIDE, MERCURIC OXIDE, VANADIUM PENTOXIDE AND MANGANESE DIOXIDE, SECURING ANOTHER EXPANDED METALLIC GRID ONTO THE OPPOSITE FACE OF SAID SEPARATOR, AND COMPRESSING THROUGH AND ONTO SAID SECOND GRID AND SAID OPPOSITE FACE OF SAID SEPARATOR AN ELECTRONEGATIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, MAGNESIUM, LEAD, IRON AND ALUMINUM, BUT AT A SUBSTANTIALLY LOWER PRESSURE THAN IN THE COMPRESSION OF SAID ELECTROPOSITIVE OXIDE MATERIAL.
Claim 2
Independent Claim
132 words
A METHOD OF FABRICATING DUPLEX ELECTRODES FOR USE IN PRIMARY BATTERIES, COMPRISING SECURING A THIN EXPANDED METALLIC GRID TO ONE FACE OF AN ELECTRONICALLY-CONDUCTIVE, ELECTROCHEMICALLY INERT METALLIC SEPARATOR OF A SIZE SLIGHTLY LARGER THAN SAID THIN EXPANDED METALLIC GRID, COMPRESSING THROUGH AND ONTO SAID GRID AND SAID FACE OF SAID SEPARATOR AT A HIGH PRESSURE AN ELECTROPOSITIVE OXIDE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILVER OXIDE, MERCURIC OXIDE, VANADIUM PENTOXIDE AND MANGANESE DIOXIDE, SECURING ANOTHER EXPANDED METALLIC GRID ONTO THE OPPOSITE FACE OF SAID SEPARATOR, AND COMPRESSING THROUGH AND ONTO SAID SECOND GRID AND SAID OPPOSITE FACE OF SAID SEPARATOR AN ELECTRONEGATIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, MAGNESIUM, LEAD, IRON AND ALUMINUM, BUT AT A SUBSTANTIALLY LOWER PRESSURE THAN IN THE COMPRESSION OF SAID ELECTROPOSITIVE OXIDE MATERIAL.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |