Patent US3621442A successfully refreshed from Google Patents.
US3621442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal connection of electronic devices
Assignee: Allen Bradley Co LLC
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Filing: 1968-11-07
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Granted: 1971-11-16
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Expires: 1988-11-07
Abstract
Abstract A process involving and connection for a chromium based electrically functioning portion supported on a substrate. A connecting layer is deposited and is bonded to the selected parts of the portion and comprises metals preferably taken from the group consisting of titanium, zirconium, tantalum and combinations thereof. A second layer is deposited over the connecting layer which will permit soldering if the connection is to be a termination or will become a conductor for interconnection on the substrate. This deposition of the second layer begins before the deposition of the connecting layer is phased out.
Inventors
- 👤 Willis J Racht
- 👤 Paul Pfister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:27
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/144; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49098
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
A connection for an electric device comprising: a. a substrate, b. a first layer supported on said substrate and comprising chromium, c. said first layer comprising at least two termination ends with the portion of said first layer between said termination ends being continuous and constituting an electrically functioning resistor, and d. a connection layer disposed on and bonded to at least one said termination end of said first resistor layer forming an ohmic contact and comprising metals taken from the group consisting of titaNium, zirconium, tantalum and combinations thereof.
Claim 2
Dependent Claim
90 words
A connection for an electric device comprising: a. a substrate, b. a first layer supported on said substrate and comprising chromium, c. said first layer comprising at least two termination ends with the portion of said first layer between said termination ends being continuous and constituting an electrically functioning resistor, and d. a connection layer disposed on and bonded to at least one said termination end of said first resistor layer forming an ohmic contact and comprising metals taken from the group consisting of titaNium, zirconium, tantalum and combinations thereof.
Claim 3
Dependent Claim
19 words
The connection of claim 1 wherein said chromium comprises more than 40 percent by weight of said first layer.
Claim 4
Dependent Claim
36 words
the connection of claim 1 wherein said first layer is substantially entirely made of the metals cobalt and chromium in proportions of 40 to 80 percent by weight of chromium and substantially the entire balance cobalt.
Claim 5
Dependent Claim
16 words
the connection of claim 1 wherein said connecting layer is at least 200 angstroms in thickness.
Claim 6
Dependent Claim
19 words
The connection of claim 1 wherein said metals comprise at least 20 percent by weight of said connection layer.
Claim 7
Dependent Claim
16 words
The connection of claim 1 wherein a third conductive layer is bonded to said connection layer.
Claim 8
Dependent Claim
18 words
the connection of claim 6 wherein said third conductive layer comprises a metal which is compatible with solder.
Claim 9
Dependent Claim
24 words
The connection of claim 7 wherein said third layer comprises metals taken from the group consisting of copper, nickel, silver, gold and combinations thereof.
Claim 10
Dependent Claim
121 words
an electric device comprising, a. a substrate, b. at least one layer on said substrate which is electrically functioning and supported by said substrate and comprising chromium, c. at least one termination end and at least one interconnection end, with the portion of said first layer between said termination end and said interconnection end being continuous and constituting an electrically functioning resistor d. each said connection comprising a second layer disposed on and bonded to said termination end and said interconnection end forming an ohmic contact and comprising metals taken from the group consisting of titanium, zirconium, tantalum and combinations thereof, and e. a third layer bonded to said second layer comprising materials which are solder compatible and good electrical conductors.
Claim 11
Dependent Claim
121 words
an electric device comprising, a. a substrate, b. at least one layer on said substrate which is electrically functioning and supported by said substrate and comprising chromium, c. at least one termination end and at least one interconnection end, with the portion of said first layer between said termination end and said interconnection end being continuous and constituting an electrically functioning resistor d. each said connection comprising a second layer disposed on and bonded to said termination end and said interconnection end forming an ohmic contact and comprising metals taken from the group consisting of titanium, zirconium, tantalum and combinations thereof, and e. a third layer bonded to said second layer comprising materials which are solder compatible and good electrical conductors.
Claim 12
Dependent Claim
26 words
the electrical device of claim 9 wherein said third layer comprises a metal taken from the group consisting of copper, nickel, silver, gold and combinations thereof.
References Cited (Backward Citations)
US3322655A
Cited
US3377697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |