Patent US3905835A successfully refreshed from Google Patents.
US3905835A
Expired / Lapsed
US
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Alkali button battery
Assignee: Suwa Seikosha KK
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Filing: 1974-06-06
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Granted: 1975-09-16
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Expires: 1994-06-06
Abstract
Abstract An alkali button battery comprising a highly alkaline electrolyte and wherein a gold or gold alloy coating is formed on at least part of the terminal surface of its positive and/or negative electrodes without being connected with the interior of the battery.
Inventors
- 👤 Yoshihiko Kasai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:17
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/543; H01M50/545; H01M50/10; H01M50/116; H01M50/117; H01M50/119; H01M50/124; H01M50/131; H01M50/133; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 words
AN ALKALI BUTTON BATTERY COMPRISING AN ALKALINE ELECTROLYTE, AN ANODE, A CATHODE, AN ANODE CAP IN ELECTRICAL CONTACT WITH SAID ANODE, A CASING IN ELECTRICAL CONTACT WITH SAID CATHODE, AND LAYER OF GOLD OR GOLD ALLOY ON AT LEAST ONE OF SAID CAP AND CASING ONLY ON THE EXTERIOR SURFACE THEREOF.
Claim 2
Dependent Claim
51 words
AN ALKALI BUTTON BATTERY COMPRISING AN ALKALINE ELECTROLYTE, AN ANODE, A CATHODE, AN ANODE CAP IN ELECTRICAL CONTACT WITH SAID ANODE, A CASING IN ELECTRICAL CONTACT WITH SAID CATHODE, AND LAYER OF GOLD OR GOLD ALLOY ON AT LEAST ONE OF SAID CAP AND CASING ONLY ON THE EXTERIOR SURFACE THEREOF.
Claim 3
Dependent Claim
18 words
A battery as claimed in claim 1 wherein said layer is in the form of a narrow strip.
Claim 4
Dependent Claim
19 words
A battery as claimed in claim 1 wherein said layer has a thickness of a least 0.1 Mu .
Claim 5
Independent Claim
45 words
A method of reducing the electrical contact resistance of an alkali button battery without increasing electrical resistance, said method comprising applying a layer of gold or gold alloy on only the exterior surface of at least one of the outer contact surfaces of the battery.
Claim 6
Independent Claim
45 words
A method of reducing the electrical contact resistance of an alkali button battery without increasing electrical resistance, said method comprising applying a layer of gold or gold alloy on only the exterior surface of at least one of the outer contact surfaces of the battery.
Claim 7
Dependent Claim
33 words
A method as claimed in claim 4 wherein said layer is applied in the form of a narrow strip on said exterior surface in the region thereof which is to be electrically contacted.
Claim 8
Dependent Claim
21 words
A method as claimed in claim 4 wherein said layer is deposited with a thickness of at least 0.1 Mu .
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |