US4306887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Getter device and process for using such
Assignee: SAES Getters SpA
•
Filing: 1980-04-04
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Granted: 1981-12-22
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Expires: 2000-04-04
Abstract
Abstract Zr-Fe alloys (15%-30% by wt Fe, balance Zr) start to sorb hydrogen at temperatures between 200° and 250° C. They are particularly useful for the sorption of hydrogen within the outer jacket of high intensity discharge lamps.
Inventors
- 👤 Aldo Barosi
- 👤 Mario Borghi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:07
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A method for sorbing hydrogen in a vacuum tube comprising the steps of I. introducing into the vacuum tube a powdered getter metal which is an alloy of from 15 to 30 weight percent iron, balance zirconium; and then II. heating the getter metal to a temperature at which hydrogen sorption commences.
Claim 2
Independent Claim
52 words
A method for sorbing hydrogen in a vacuum tube comprising the steps of I. introducing into the vacuum tube a powdered getter metal which is an alloy of from 15 to 30 weight percent iron, balance zirconium; and then II. heating the getter metal to a temperature at which hydrogen sorption commences.
Claim 3
Independent Claim
76 words
A method of sorbing hydrogen in a vacuum tube comprising the steps of: I. introducing into the vacuum tube a powdered getter metal, having a particle size of from 1 to 125 microns, wherein the getter metal consists essentially of Zr 2 Fe; and then II. heating the powdered getter metal to a temperature of 200° to 250° C.; and then III. sorbing hydrogen by means of the powdered getter metal in the presence of nitrogen.
Claim 4
Independent Claim
76 words
A method of sorbing hydrogen in a vacuum tube comprising the steps of: I. introducing into the vacuum tube a powdered getter metal, having a particle size of from 1 to 125 microns, wherein the getter metal consists essentially of Zr 2 Fe; and then II. heating the powdered getter metal to a temperature of 200° to 250° C.; and then III. sorbing hydrogen by means of the powdered getter metal in the presence of nitrogen.
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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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |