Patent US844148A successfully refreshed from Google Patents.
Patent US3348976A successfully refreshed from Google Patents.
US3348976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-supporting sintered zinc anode structure
Assignee: Duracell Inc Canada
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Filing: 1965-03-30
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Granted: 1967-10-24
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Kelly Francis John
- 👤 Przybyla Franciszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:40
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN COMBINATION WITH A BATTERY: A POROUS ANODE OF SPECIFIC ANODE SHAPE AND ENTIRE SRUCTURAL INTEGRITY IN THE FORM OF A SELF-SUPPORTING OPEN THREE DIMENSIONED METAL NETWORK CONSISTING ESSENTIALLY OF SINTERED ZINC METAL PARTICLES HAVING COMMUNICATING VOIDS THEREBETWEEN; AND AT LEAST ONE WELD CONSISTING ESSENTIALLY OF ZINC METAL CONNECTING EACH ZINC PARTICLE OF SUBSTANTIALLY ALL SAID PARTICLES TO AT LEAST ONE ADJACENT ZINC PARTICLE OF SAID STRUCTURE AND PROVIDING THE SOLE STRUCTURAL CONNECTION BETWEEN SAID PARTICLES, SAID PARTICLES EXHIBITING WITHIN SAID STRUCTURE A PARTICLE SHAPE MODIFIED BY TEMPERATURE ALONE.
Claim 2
Dependent Claim
89 words
IN COMBINATION WITH A BATTERY: A POROUS ANODE OF SPECIFIC ANODE SHAPE AND ENTIRE SRUCTURAL INTEGRITY IN THE FORM OF A SELF-SUPPORTING OPEN THREE DIMENSIONED METAL NETWORK CONSISTING ESSENTIALLY OF SINTERED ZINC METAL PARTICLES HAVING COMMUNICATING VOIDS THEREBETWEEN; AND AT LEAST ONE WELD CONSISTING ESSENTIALLY OF ZINC METAL CONNECTING EACH ZINC PARTICLE OF SUBSTANTIALLY ALL SAID PARTICLES TO AT LEAST ONE ADJACENT ZINC PARTICLE OF SAID STRUCTURE AND PROVIDING THE SOLE STRUCTURAL CONNECTION BETWEEN SAID PARTICLES, SAID PARTICLES EXHIBITING WITHIN SAID STRUCTURE A PARTICLE SHAPE MODIFIED BY TEMPERATURE ALONE.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |