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Patent US3959162A successfully refreshed from Google Patents.
US3959162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating oil
Assignee: Nissin Electric Co Ltd
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Filing: 1974-08-02
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Granted: 1976-05-25
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Expires: 1994-08-02
Abstract
Abstract An insulating oil for use in electrical devices, comprising a mixture of trixylenylphosphate and 10% to 40% by volume of insulating oil having a viscosity of 5 cp to 15 cp at 30°C and selected from the group consisting of mineral oil, alkylbenzene, alkylnaphthalene, diallylalkane, 2-diphenylmethylether, 2-diphenyl-isopropylether, paraffin hydrocarbon oil and naphthene hydrocarbon oil.
Inventors
- 👤 Mineaki Nishimatsu
- 👤 Sadayoshi Mukai
- 👤 Kaname Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:43
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; C; C10; C10M; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
32 words
An insulating oil composition for use in electrical devices, comprising trixylenylphosphate and from 10% to 40% by volume of insulating oil having a viscosity of 5 cp to 15 cp at 30°C.
Claim 2
Dependent Claim
32 words
An insulating oil composition for use in electrical devices, comprising trixylenylphosphate and from 10% to 40% by volume of insulating oil having a viscosity of 5 cp to 15 cp at 30°C.
Claim 3
Dependent Claim
36 words
An insulating oil composition for use in electrical devices, comprising trixylenylphosphate and from 10% to 40% by volume of a single kind of insulating oil having a viscosity of 5 cp to 10 cp at 30°C.
Claim 4
Dependent Claim
36 words
An insulating oil composition for use in electrical devices, comprising trixylenylphosphate and from 10% to 40% by volume of a single kind of insulating oil having a viscosity of 5 cp to 10 cp at 30°C.
Claim 5
Dependent Claim
38 words
An insulating oil composition for use in electrical devices, comprising trixylenylphosphate and from 10% to 40% by volume of a mixture of a plurality of insulating oils having a viscosity of 5 cp to 15 cp at 30°C.
Claim 6
Dependent Claim
38 words
An insulating oil composition for use in electrical devices, comprising trixylenylphosphate and from 10% to 40% by volume of a mixture of a plurality of insulating oils having a viscosity of 5 cp to 15 cp at 30°C.
Claim 7
Dependent Claim
13 words
The composition of claim 2, wherein said insulating oil is a mineral oil.
Claim 8
Dependent Claim
12 words
The composition of claim 2, wherein said insulating oil is an alkylbenzene.
Claim 9
Dependent Claim
12 words
The composition of claim 2, wherein said insulating oil is an alkylnaphthalene.
Claim 10
Dependent Claim
11 words
The composition of claim 2, wherein said insulating oil is 2-diphenylmethylether.
Claim 11
Dependent Claim
11 words
The composition of claim 2, wherein said insulating oil is 2-diphenylisopropylether.
Claim 12
Dependent Claim
14 words
The composition of claim 2, wherein said insulating oil is a paraffin hydrocarbon oil.
Claim 13
Dependent Claim
14 words
The composition of claim 2, wherein said insulating oil is a naphthene hydrocarbon oil.
Claim 14
Dependent Claim
31 words
The composition of claim 3, wherein said plurality of insulating oils are selected from the group consisting of mineral oils, alkylbenzenes, alkylnaphthalenes, 2-diphenylmethylether, 2-diphenylisopropylether, paraffin hydrocarbon oils and naphthene hydrocarbon oils.
References Cited (Backward Citations)
US1721295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |