US3945849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery cell with quaternary ammonium halide
Assignee: Polaroid Corp
•
Filing: 1970-06-26
•
Granted: 1976-03-23
•
Expires: 1990-06-26
Abstract
Abstract A corrosion inhibitor for battery anodes, e.g., metals such as zinc, lead, and the like, in primary battery cells, comprises a quaternary ammonium salt, particularly, tetraalkyl ammonium chloride.
Inventors
- 👤 Arnold Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/628; H01M6/00; H01M6/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
26 words
A primary battery cell comprising an ammonium chloride electrolyte, a metallic anode and a cathode wherein a quaternary ammonium halide compound is associated with said anode.
Claim 2
Dependent Claim
26 words
A primary battery cell comprising an ammonium chloride electrolyte, a metallic anode and a cathode wherein a quaternary ammonium halide compound is associated with said anode.
Claim 3
Dependent Claim
18 words
The product as defined in claim 1 wherein said anode is zinc and said cathode is manganese oxide.
Claim 4
Dependent Claim
17 words
The product as defined in claim 1 wherein said quaternary ammonium compound is disposed in said electrolyte.
Claim 5
Dependent Claim
17 words
The product as defined in claim 1 wherein said quaternary ammonium compound is precoated on said anode.
Claim 6
Dependent Claim
34 words
The product as defined in claim 1 wherein said quaternary ammonium compound is a compound of the formula: NR.sub.4 X wherein R is an alkyl or aromatic group and X is an halogen atom.
Claim 7
Dependent Claim
11 words
The product as defined in claim 1 which includes mercuric chloride.
Claim 8
Dependent Claim
14 words
The product as defined in claim 1 wherein said compound is tetramethyl ammonium chloride.
Claim 9
Dependent Claim
14 words
The product as defined in claim 1 wherein said compound is tetraethyl ammonium chloride.
Claim 10
Dependent Claim
14 words
The product as defined in claim 1 wherein said compound is tetrapropyl ammonium chloride.
Claim 11
Dependent Claim
14 words
The product as defined in claim 1 wherein said compound is tetraheptyl ammonium chloride.
Claim 12
Dependent Claim
25 words
A galvanic cell comprising an ammonium chloride electrolyte, a metallic anode and a cathode wherein a quaternary ammonium halide compound is associated with said anode.
Claim 13
Dependent Claim
25 words
A galvanic cell comprising an ammonium chloride electrolyte, a metallic anode and a cathode wherein a quaternary ammonium halide compound is associated with said anode.
References Cited (Backward Citations)
US2950999A
Cited
US2566114A
Cited
US3160526A
Cited
US3291646A
Cited
US3594235A
Cited
US3620848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |