Patent US4310598A successfully refreshed from Google Patents.
US4310598A
Expired / Lapsed
US
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Coated glass powder having a negative coefficient of linear thermal expansion and a composition containing the same
Assignee: Niterra Co Ltd
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Filing: 1979-09-21
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Granted: 1982-01-12
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Expires: 1999-09-21
Abstract
Abstract A powder having a negative coefficient of linear thermal expansion and sealing compositions containing the same are disclosed wherein the powder is a β-eucryptite particle having on the surface thereof a layer of tin oxide, titanium oxide, and/or zirconium oxide.
Inventors
- 👤 Akio Takami
- 👤 Kazuo Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:30
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/24; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A powder having a negative coefficient of linear thermal expansion which comprises a β-eucryptite particle having on the surface thereof a single layer of or multiple layers of a member selected from the group consisting of tin oxide, titanium oxide, zirconium oxide and a mixture of two or more of said oxides, said oxide being present in a thickness of about 1μ or less.
Claim 2
Dependent Claim
64 words
A powder having a negative coefficient of linear thermal expansion which comprises a β-eucryptite particle having on the surface thereof a single layer of or multiple layers of a member selected from the group consisting of tin oxide, titanium oxide, zirconium oxide and a mixture of two or more of said oxides, said oxide being present in a thickness of about 1μ or less.
Claim 3
Dependent Claim
14 words
The powder of claim 1, wherein said oxide is about 0.2 to 0.8μ thick.
Claim 4
Dependent Claim
14 words
The powder of claim 1, wherein said oxide is a layer of tin oxide.
Claim 5
Dependent Claim
14 words
The powder of claim 1, wherein said oxide is a layer of titanium oxide.
Claim 6
Dependent Claim
14 words
The powder of claim 1, wherein said oxide is a layer of zirconium oxide.
Claim 7
Dependent Claim
57 words
A sealing composition comprising a β-eucryptite particle on the surface of which is a single layer of or multiple layers of a member selected from the group consisting of tin oxide, titanium oxide, zirconium oxide and a mixture of two or more of said oxides, said oxide being present in a thickness of about 1μ or less.
Claim 8
Dependent Claim
57 words
A sealing composition comprising a β-eucryptite particle on the surface of which is a single layer of or multiple layers of a member selected from the group consisting of tin oxide, titanium oxide, zirconium oxide and a mixture of two or more of said oxides, said oxide being present in a thickness of about 1μ or less.
References Cited (Backward Citations)
US3047409A
Cited
US4025667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |