US4556613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistant glass in glass-metal seal and cell terminal structure for lithium electrochemical cells
Assignee: Duracell Inc USA
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Filing: 1980-12-22
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Granted: 1985-12-03
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Expires: 2000-12-22
Abstract
Abstract A lithium-containing electrochemical cell with a glass-metal seal and cell terminal structure thereon with said glass comprising a glass loaded with alumina or other stable metal oxide or an aluminosilicate glass with or without such alumina or stable metal oxide loading.
Inventors
- 👤 Alwyn H. Taylor
- 👤 Wayne L. Lees
- 👤 Michael L. Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:54
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C8/00; C03C8/24; H; H01; H01M; H01M50/00; H01M50/10; H01M50/183; H01M50/19; H01M50/191; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A non-aqueous electrochemical cell having an anode comprised of a member of the group consisting of alkali metals, alkaline earth metals and aluminum, said cell being hermetically sealed with a metal-glass-metal seal wherein said glass consists essentially of a member of the group consisting of aluminosilicate glass and glass consisting essentially of alumina and oxides more stable than alumina, wherein said cell contains a lithium anode and wherein said cell contains a cathode depolarizer selected from the group consisting of sulfur dioxide and thionyl chloride.
Claim 2
Dependent Claim
85 words
A non-aqueous electrochemical cell having an anode comprised of a member of the group consisting of alkali metals, alkaline earth metals and aluminum, said cell being hermetically sealed with a metal-glass-metal seal wherein said glass consists essentially of a member of the group consisting of aluminosilicate glass and glass consisting essentially of alumina and oxides more stable than alumina, wherein said cell contains a lithium anode and wherein said cell contains a cathode depolarizer selected from the group consisting of sulfur dioxide and thionyl chloride.
Claim 3
Dependent Claim
35 words
The electrochemical cell of claim 1 wherein said glass in said metal-glass-metal seal contains particles of metal oxides having free energies of formation per gm-atom of oxygen at least as negative as that of alumina.
Claim 4
Dependent Claim
13 words
The electrochemical cell of claim 2 wherein said particles are comprised of alumina.
Claim 5
Dependent Claim
15 words
The electrochemical cell of claim 3 wherein said alumina particles are substantially free of asperities.
Claim 6
Dependent Claim
17 words
The electrochemical cell of claim 4 wherein said particles have diameters ranging between 1 and 30 microns.
Claim 7
Dependent Claim
18 words
The electrochemical cell of claim 2 wherein said particles comprise at least 10% by weight of said glass.
Claim 8
Dependent Claim
37 words
The electrochemical cell of claim 2 wherein said particles are selected from members of the group consisting of CaO, BeO, MgO, SrO, BaO, Ce 2 O 3 , Sc 2 O 3 , and ZrO 2 .
Claim 9
Dependent Claim
22 words
The electrochemical cell of claim 2 wherein said metal oxide particle inclusions does not increase the glass working temperature above 1100° C.
Claim 10
Dependent Claim
20 words
The electrochemical cell of claim 1 wherein said glass containing alumina and oxides more stable than alumina comprises calcium aluminate.
Claim 11
Dependent Claim
52 words
An electrochemical cell comprising a lithium anode and a cathode depolarizer selected from the group consisting of sulfur dioxide and thionyl chloride with said cell being hermetically sealed with a metal-glass-metal seal wherein said glass is comprised of an aluminosilicate glass having included therein at least 10% by weight particles of alumina.
Claim 12
Dependent Claim
52 words
An electrochemical cell comprising a lithium anode and a cathode depolarizer selected from the group consisting of sulfur dioxide and thionyl chloride with said cell being hermetically sealed with a metal-glass-metal seal wherein said glass is comprised of an aluminosilicate glass having included therein at least 10% by weight particles of alumina.
Claim 13
Dependent Claim
52 words
An electrochemical cell comprising a lithium anode and a cathode depolarizer selected from the group consisting of sulfur dioxide and thionyl chloride with said cell being hermetically sealed with a metal-glass-metal seal wherein said glass is comprised of a borosilicate glass having included therein at least 10% by weight particles of alumina.
Claim 14
Dependent Claim
52 words
An electrochemical cell comprising a lithium anode and a cathode depolarizer selected from the group consisting of sulfur dioxide and thionyl chloride with said cell being hermetically sealed with a metal-glass-metal seal wherein said glass is comprised of a borosilicate glass having included therein at least 10% by weight particles of alumina.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |