US2616940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cell
Assignee: Dow Chemical Co
•
Filing: 1949-12-22
•
Granted: 1952-11-04
•
Expires: 1969-12-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:00
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PRIMARY CELL HAVING AN ANODE FORMED OF MAGNESIUM OR A MAGNESIUM-BASE ALLOY, A CATHODE MIX OF MANGANESE DIOXIDE AND FINELY-DIVIDED CARBON, AND A ELECTROLYTE COMPRISING AN AQUEOUS SOLUTION OF A BROMIDE SELECTED FROM THE GROUP
Claim 2
Dependent Claim
36 words
A PRIMARY CELL HAVING AN ANODE FORMED OF MAGNESIUM OR A MAGNESIUM-BASE ALLOY, A CATHODE MIX OF MANGANESE DIOXIDE AND FINELY-DIVIDED CARBON, AND A ELECTROLYTE COMPRISING AN AQUEOUS SOLUTION OF A BROMIDE SELECTED FROM THE GROUP
References Cited (Backward Citations)
US1901588A
Cited
US2050172A
Cited
US2116091A
Cited
US2343194A
Cited
US2547907A
Cited
US2547908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |