US2605300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite molding composition
Assignee: Union Carbide Corp
•
Filing: 1950-02-23
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Granted: 1952-07-29
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Expires: 1970-02-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred A Shirland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A POSITIVE ELECTRODE FOR A DRY CELL, SAID ELECTRODE BEING MOLDED FROM A COMPOSITION CONTAINING AS ESSENTIAL CONSTITUENTS NATURAL FLAKE GRAPHITE AND PETROLEUM-BASE MICROCRYSTALLINE WAX, SAID WAX SERVING AS A BINDER AND BEING PRESENT IN A PROPORTION OF 10% TO 20% OF SAID COMPOSITION BY WEIGHT, THE REMAINDER BEING NATURAL FLAKE GRAPHITE AND AN INERT MINERAL DILUENT SELECTED FROM THE GROUP CONSISTING OF MICA AND TALC, SAID DILUENT BEING PRESENT IN A PROPORTION UP 100% OF SAID GRAPHITE, AT LEAST THE MAJOR PORTION OF SAID GRAPHITE HAVING A PARTICLE SIZE OF 65 MESH TO 325 MESH.
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Cited
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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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |