Patent US1298418A successfully refreshed from Google Patents.
Patent US3294590A successfully refreshed from Google Patents.
US3294590A
Expired / Lapsed
US
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Electrochemical cell
Assignee: Yardney International Corp
•
Filing: 1962-11-01
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Granted: 1966-12-27
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Solomon Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:46
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/54; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN AN ELECTROCHEMICAL DEVICE HAVING A POSITIVE ELECTRODE, A NEGATIVE ELECTRODE AND ANN ELECTROYLTE, THE IMPROVEMENT WHEREBY SAID POSITIVE ELECTRODE COMPRISES IN ACTIVE MATERIAL CONSISTING OF SILVER COMPOSED ESSENTIALLY OF PARTICLES HAVING A PARTICLE SIZE AS MEASURE BY THE FISHER "SUB-SIEVE SIZER" OF NOT MORE THAN ABOUT 2.5 MICRONS.
Claim 2
Dependent Claim
49 words
IN AN ELECTROCHEMICAL DEVICE HAVING A POSITIVE ELECTRODE, A NEGATIVE ELECTRODE AND ANN ELECTROYLTE, THE IMPROVEMENT WHEREBY SAID POSITIVE ELECTRODE COMPRISES IN ACTIVE MATERIAL CONSISTING OF SILVER COMPOSED ESSENTIALLY OF PARTICLES HAVING A PARTICLE SIZE AS MEASURE BY THE FISHER "SUB-SIEVE SIZER" OF NOT MORE THAN ABOUT 2.5 MICRONS.
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |