US3772174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deposition of alloy films
Assignee: National Aeronautics and Space Administration
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Filing: 1971-04-21
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Granted: 1973-11-13
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Expires: 1991-04-21
Abstract
Abstract A glow discharge is established by applying a high voltage between an anode and a cathode object disposed in an inert gas atmosphere. An alloy of two or more metals is vaporized and the vapor injected into the glow discharge causing the alloy to be plated onto the cathode object.
Inventors
- 👤 T Spalvins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:34
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/32; C23C14/246
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
The method of claim 1 wherein said alloy is vaporized by heating said second metal body and by depositing said powder of said alloy on said second metal body at said predetermined rate.
Claim 2
Dependent Claim
31 words
The method of claim 2 wherein said alloy powder is Pb-Sn and said second metal body is heated to a temperature in the range of from about 2100*F to about 2350*F.
Claim 3
Dependent Claim
19 words
The method of claim 3 wherein said inert gas is argon at a pressure of about 20 Mu .
Claim 4
Dependent Claim
31 words
The method of claim 2 wherein said alloy powder is Cu-Au and said second metal body is heated to a temperature in the range of from about 3050*F to about 3150*F.
Claim 5
Dependent Claim
18 words
The method of claim 5 wherein said inert gas is argon at a pressure of 20 Mu .
Claim 6
Dependent Claim
48 words
The method of claim 1 wherein said high voltage is in the range of from about 3 kv to 5 kv; said inert gas is argon at a pressure of about 20 Mu ; and the distance between said first and second metal bodies being about 14 c.m.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |