Patent US5059498A successfully refreshed from Google Patents.
US5059498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic nonaqueous electrolytic solution type cell
Assignee: Maxell Ltd
•
Filing: 1990-06-15
•
Granted: 1991-10-22
•
Expires: 2010-06-15
Abstract
Abstract An inorganic nonaqueous electrolytic solution type cell comprising an oxyhalide which is in the liquid state at room temperature and serves as an active material for a positive electrode and as a solvent for an electrolytic solution; a negative electrode made of an alkali metal; a positive electrode made of a porous carbon molded article; and a separator which is positioned between said negative electrode and said positive electrode and comprises a nonwoven fabric of glass fibers and a microporous film having a substantially uniform micropores having curved passages, which cell suffers less decrease of closing voltage after storage and less formation of the internal short circuits due to vibration.
Inventors
- 👤 Kaoru Hisatomi
- 👤 Hiroshi Sasama
- 👤 Kazuo Ishida
- 👤 Shintaro Sekido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:43
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/431; H01M50/434; H01M50/437; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M50/411; H01M50/414; H01M50/426; H01M50/44; H01M50/449; H01M50/451; H01M50/454; H01M50/46; H01M50/489; H01M50/491; H01M6/00; H01M6/14; H01M2300/00; H01M2300/0017; H01M2300/002; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
An inorganic nonaqueous electrolytic solution type cell comprising: an oxyhalide which is in the liquid state at room temperature and serves as an active material for a positive electrode and as a solvent for an electrolytic solution; a negative electrode made of an alkali metal; a positive electrode made of a porous carbon molded article; and a separator which is positioned between said negative electrode and said positive electrode and comprises a nonwoven fabric of glass fibers and a microporous film having a substantially uniform micropores having curved passages.
Claim 2
Dependent Claim
89 words
An inorganic nonaqueous electrolytic solution type cell comprising: an oxyhalide which is in the liquid state at room temperature and serves as an active material for a positive electrode and as a solvent for an electrolytic solution; a negative electrode made of an alkali metal; a positive electrode made of a porous carbon molded article; and a separator which is positioned between said negative electrode and said positive electrode and comprises a nonwoven fabric of glass fibers and a microporous film having a substantially uniform micropores having curved passages.
Claim 3
Dependent Claim
20 words
The inorganic nonaqueous electrolytic solution type cell according to claim 1, wherein the microporous film is made of a fluororesin.
Claim 4
Dependent Claim
27 words
The inorganic nonaqueous electrolytic solution type cell according to claim 1, wherein the fluororesin is one selected from the group consisting of homo- or co-polymers of tetrafluoroethylene.
Claim 5
Dependent Claim
21 words
The inorganic nonaqueous electrolytic solution type cell according to claim 2, wherein the fluororesin is a copolymer of ethylene and tetrafluoroethylene.
Claim 6
Dependent Claim
16 words
The inorganic nonaqueous electrolytic solution type cell according to claim 2, wherein the fluororesin is polytetrafluoroethylene.
Claim 7
Dependent Claim
35 words
The inorganic nonaqueous electrolytic solution type cell according to claim 1, wherein the separator is so positioned that the microporous film faces the positive electrode and the nonwoven glass fiber fabric faces the negative electrode.
Claim 8
Dependent Claim
24 words
The inorganic nonaqueous electrolytic solution type cell according to claim 1, wherein the microporous film has a porosity of 40 to 80% by volume.
Claim 9
Dependent Claim
26 words
The inorganic nonaqueous electrolytic solution type cell according to claim 1, wherein the nonwoven glass fiber fabric has a porosity of 50 to 95% by volume.
Claim 10
Dependent Claim
30 words
The inorganic nonaqueous electrolytic solution type cell according to claim 1, wherein the oxyhalide is a compound selected from the group consisting of thionyl chloride, sulfuryl chloride and phosphoryl chloride.
References Cited (Backward Citations)
US2511887A
Cited
US3159507A
Cited
US4288503A
Cited
US4361632A
Cited
US4401732A
Cited
US4421834A
Cited
US4663252A
Cited
US4650730A
Cited
US4888255A
Cited
US4812375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |