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Patent US4299638A successfully refreshed from Google Patents.
US4299638A
Expired / Lapsed
US
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Method of bonding silicon ceramic members
Assignee: NGK Insulators Ltd
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Filing: 1980-02-19
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Granted: 1981-11-10
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Expires: 2000-02-19
Abstract
Abstract Silicon ceramic articles having a complicated shape and a high strength can be obtained in a high dimensional accuracy by fitting a silicon ceramic member having a lower firing shrinkage into another silicon ceramic member having a higher firing shrinkage, and firing the resulting assembly to bond firmly both the members into one integral body. The silicon ceramic article can be used as gas turbine parts, engine parts and the like.
Inventors
- 👤 Tadaaki Matsuhisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:17
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/3084; C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/584; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B35/63404; C04B35/63416; C04B35/64; C04B35/645; C04B37/00; C04B37/008; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/524; C04B2235/5244; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/658; C04B2235/70; C04B2235/72; C04B2235/728; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/365; C04B2237/368; C04B2237/50; C04B2237/56; C04B2237/568
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A method of bonding at least two silicon ceramic members with each other, comprising fitting a first silicon ceramic member into a second silicon ceramic member through a layer of powder, paste or slurry of metallic silicon, silicon nitride or silicon carbide interposed between both the members at the interface to form an assembly, the first silicon ceramic member having a firing shrinkage lower than that of the second silicon ceramic member, and firing the assembly so as to bond firmly the first and second silicon ceramic members into one integral body.
Claim 2
Independent Claim
92 words
A method of bonding at least two silicon ceramic members with each other, comprising fitting a first silicon ceramic member into a second silicon ceramic member through a layer of powder, paste or slurry of metallic silicon, silicon nitride or silicon carbide interposed between both the members at the interface to form an assembly, the first silicon ceramic member having a firing shrinkage lower than that of the second silicon ceramic member, and firing the assembly so as to bond firmly the first and second silicon ceramic members into one integral body.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |