Patent US4830371A successfully refreshed from Google Patents.
Patent US3831070A successfully refreshed from Google Patents.
US3831070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionization self-protecting capacitor
Assignee: Umicore NV SA
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Filing: 1973-03-07
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Granted: 1974-08-20
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Expires: 1993-03-07
Abstract
Abstract Self-protecting capacitor against internal ionization, characterised in that it is coated with a gas-tight plastic material having a thickness such as to maintain constant the pressure due to the evolved gases arising from a damage of the capacitor dielectric material, caused by a start of ionization, and to avoid all contact of its active part with the atmosphere. The equilibrium pressure determines the end of the ionization.
Inventors
- 👤 Jean Bernard Bouille
- 👤 Jose Ledoyen
- 👤 Georges Warmont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:34
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/015; H01G2/00; H01G2/14; H01G4/224
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
A capacitor structure according to claim 1, wherein said plastic material is thermosetting.
Claim 2
Dependent Claim
13 words
A capacitor structure according to claim 1, wherein said plastic material is thermoplastic.
Claim 3
Dependent Claim
14 words
A capacitor structure according to claim 1, wherein said plastic material is a polyurethane.
Claim 4
Dependent Claim
15 words
A capacitor structure according to claim 1, wherein said plastic material is an epoxy resin.
Claim 5
Dependent Claim
14 words
A capacitor structure according to claim 1, wherein said plastic material is a polyester.
References Cited (Backward Citations)
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Cited
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |