US3929470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-metal sealing alloy
Assignee: Allegheny Ludlum Corp
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Filing: 1973-09-21
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Granted: 1975-12-30
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Expires: 1993-09-21
Abstract
Abstract A fine grained alloy containing 38-45% nickel, 3-15% chromium, up to 0.1% carbon, from 0.1-1.0% titanium and the balance iron and residuals that is useful for production of glass-to-metal seals is disclosed.
Inventors
- 👤 Thomas H Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:36
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/50; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3066; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C21; C21D; C21D8/00; C21D8/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
AN ALLOY CONSISTING ESSENTIALLY OF FROM 38% TO 45% ICKEL, FROM 3% TO 15% CHROMIUM, FROM 0.1% TO 1.0% TITANIUM, UP TO 0.1% CARBON AND THE BALANCE IRON AND RESIDUALS; SAID ALLOY HAVING A GRAIN SIZE FINER THAN ASTM NO. 6.
Claim 2
Dependent Claim
41 words
AN ALLOY CONSISTING ESSENTIALLY OF FROM 38% TO 45% ICKEL, FROM 3% TO 15% CHROMIUM, FROM 0.1% TO 1.0% TITANIUM, UP TO 0.1% CARBON AND THE BALANCE IRON AND RESIDUALS; SAID ALLOY HAVING A GRAIN SIZE FINER THAN ASTM NO. 6.
Claim 3
Dependent Claim
13 words
The alloy of claim 1 wherein the nickel content is from about 41-43%.
Claim 4
Dependent Claim
12 words
The alloy of claim 1 wherein the chromium content is about 5.4%-6.0%.
Claim 5
Dependent Claim
13 words
The alloy of claim 1 wherein the titanium content is from about 0.2-0.7%.
References Cited (Backward Citations)
US1489243A
Cited
US2266482A
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US2730260A
Cited
US2793948A
Cited
US3366473A
Cited
US3843332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |