US4361633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar electrical cells and batteries
Assignee: Polaroid Corp
•
Filing: 1981-08-24
•
Granted: 1982-11-30
•
Expires: 2001-08-24
Abstract
Abstract Laminar electrical cells and batteries of the LeClanche type especially adapted for service at high drain rates with variable duty cycles by the inclusion of cathodes formed as slurries of MnO2 and carbon particles in an electrolyte comprising, by weight, about 2% of NH4Cl, about 25% ZnCl2, and the balance water with a minor amount of mercuric chloride.
Inventors
- 👤 Pierre E. Nel
- 👤 Joanne C. Pleskowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:04
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
A laminar electrical cell comprising an anode comprising a solid deposit of zinc powder in a binder on a conductive plastic substrate, a cathode comprising a mixture of MnO 2 and carbon particles, a cellophane separator beteween and in contact with said anode and said cathode, and a solution consisting essentially of from about 1 to 3 percent of NH 4 Cl, from about 20 to 29 percent of ZnCl 2 , and the balance water, by weight based on the weight of solution, permeating said anode, said cathode, and said separator.
Claim 2
Dependent Claim
92 words
A laminar electrical cell comprising an anode comprising a solid deposit of zinc powder in a binder on a conductive plastic substrate, a cathode comprising a mixture of MnO 2 and carbon particles, a cellophane separator beteween and in contact with said anode and said cathode, and a solution consisting essentially of from about 1 to 3 percent of NH 4 Cl, from about 20 to 29 percent of ZnCl 2 , and the balance water, by weight based on the weight of solution, permeating said anode, said cathode, and said separator.
Claim 3
Dependent Claim
23 words
The cell of claim 1, in which said solution contains 2 percent of NH 4 Cl and 25 percent of ZnCl 2 .
References Cited (Backward Citations)
US3795545A
Cited
US3888699A
Cited
US3874932A
Cited
US4105815A
Cited
US4019251A
Cited
US4119770A
Cited
US4105831A
Cited
US4254191A
Cited
US4256813A
Cited
US4125684A
Cited
US4125685A
Cited
US4161815A
Cited
USRE30458E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |