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US4882653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor
Assignee: Toray Industries Inc
•
Filing: 1989-02-16
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Granted: 1989-11-21
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Expires: 2009-02-16
Abstract
Abstract An aluminum-metallized polyphenylenesulfide film capacitor. The polyphenylenesulfide film serves as at least a portion of dielectric material. The ratio of S/Al at the surface of the aluminum electrode which is determined by X-ray photoelectron spectroscopy method is not more than 0.14, or the ratio of Cl/Al at the surface of the aluminum electrode is not more than 0.013.
Inventors
- 👤 Motoyuki Suzuki
- 👤 Yukichi Deguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:09
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01G4/018; H01G4/06; H01G4/14; H01G4/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
A capacitor comprising an aluminum thin layer as an electrode and a polyphenylene sulfide film as at least a portion of dielectric material, in which the ratio of the number of atoms of sulfur to the number of atoms of aluminum at the surface of the aluminum thin layer is not more than 0.14.
Claim 2
Dependent Claim
54 words
A capacitor comprising an aluminum thin layer as an electrode and a polyphenylene sulfide film as at least a portion of dielectric material, in which the ratio of the number of atoms of sulfur to the number of atoms of aluminum at the surface of the aluminum thin layer is not more than 0.14.
Claim 3
Dependent Claim
24 words
The capacitor of claim 1, wherein the polyphenylene sulfide film has a non-metallized surface and a barrier layer is formed on the non-metallized surface.
Claim 4
Dependent Claim
36 words
The capacitor of claim 1 or 2, wherein the ratio of the number of atoms of chlorine to the number of atoms of aluminum at the surface of the aluminum electrode is not more than 0.013.
Claim 5
Dependent Claim
53 words
A capacitor comprising an aluminum thin layer as an electrode and a polyphenylene sulfide film as at least a portion of dielectric material, in which the ratio of the number of atoms of chlorine to the number of atoms of aluminum at the surface of the aluminum electrode is not more than 0.013.
Claim 6
Dependent Claim
53 words
A capacitor comprising an aluminum thin layer as an electrode and a polyphenylene sulfide film as at least a portion of dielectric material, in which the ratio of the number of atoms of chlorine to the number of atoms of aluminum at the surface of the aluminum electrode is not more than 0.013.
Claim 7
Dependent Claim
24 words
The capacitor of claim 4 wherein the polyphenylene sulfide film has a non-metallized surface and a barrier layer is formed on the non-metallized surface.
Claim 8
Dependent Claim
17 words
The capacitor of claim 2 or 5, wherein the barrier layer has a thickness of 0.001-0.5 μm.
Claim 9
Dependent Claim
28 words
The capacitor of any one of claims 1-3, wherein the amount of the extract from the polyphenylene sulfide film by xylene is not more than 2.0% by weight.
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) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |