US2597451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cell
Assignee: Burgess Battery Co
•
Filing: 1948-11-20
•
Granted: 1952-05-20
•
Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Coleman
- 👤 Demetrios V Louzos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:42
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A PRIMARY CELL COMPRISING A POSITIVE ELECTRODE, A NEGATIVE ELECTRODE FROM THE GROUP CONSISTING OF MAGNESIUM AND CALIUM, AND AN ELECTROLYTE IN CONTACT WITH SAID ELECTRODES COMPRISING A SUSBTANTIALLY WATER-FREE SOLVENT FROM THE GROUP CONSISTING OF THE NORMAL ALCOHOLS, METHANOL, ETHANOL, PROPANOL, BUTANOL AND PENTANOL, AND 1,2 ETHANEDIOL, SAID SOLVENT CONTAINING DISSOLVED THEREIN A COMPOUND FROM THE GROUP CONSISTING OF THE CHLORIDES, NITRATES AND PERCHLORATES OF MAGNESIUM AND THE CHLORIDES, NITRATES AND PERCHLORATES OF THE METALS WHICH ARE ELECTRONEGATIVE WITH RESPECT TO MAGNESIUM.
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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |