US3853613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing an article and article manufactured by means of the method
Assignee: US Philips Corp
•
Filing: 1972-12-07
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Granted: 1974-12-10
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Expires: 1992-12-07
Abstract
Abstract The invention relates to the manufacture of a platinum pattern on a body, for example, for contacting a semiconductor body. First a layer of a material which can react with the platinum is provided on the body, namely in the form of a negative of the platinum pattern. A layer of platinum is then provided. The pattern of material is caused to react with the platinum layer and the reaction product of the material and the platinum is then removed after which the (positive) platinum pattern remains.
Inventors
- 👤 H Wilting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/048; H10; H10N; H10N97/00; H10P; H10P95/00; H10W; H10W20/00; H10W20/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A METHOD OF PROVIDING A PLATINUM PATTERN ON A SUBSTRATE SAID METHOD COMPRISING PROVIDING, IN A PATTERN COMPLEMENTARY TO THE DESIRED PLATINUM PATTERN, A LAYER OF A MATERIAL REACTIVE WITH PLATINUM ON A SUBSTRATE PROVIDING A LAYER OF PLATINUM ON SAID MATERIAL AND ON THE EXPOSED PORTIONS OF THE SUBSTRATE, FORMING A REACTION PRODUCT OF PLATINUM AND THE MATERIAL OF THE COMPLEMENTARY PATTERN AND SELECTIVELY REMOVING THE REACTION PRODUCT OF THE PLATINUM AND THE MATERIAL FROM THE BODY RELATIVE TO THE PLATINUM THEREBY LAEVING THE DESIRED PLATINUM PATTERN ON THE BODY.
Claim 2
Independent Claim
91 words
A METHOD OF PROVIDING A PLATINUM PATTERN ON A SUBSTRATE SAID METHOD COMPRISING PROVIDING, IN A PATTERN COMPLEMENTARY TO THE DESIRED PLATINUM PATTERN, A LAYER OF A MATERIAL REACTIVE WITH PLATINUM ON A SUBSTRATE PROVIDING A LAYER OF PLATINUM ON SAID MATERIAL AND ON THE EXPOSED PORTIONS OF THE SUBSTRATE, FORMING A REACTION PRODUCT OF PLATINUM AND THE MATERIAL OF THE COMPLEMENTARY PATTERN AND SELECTIVELY REMOVING THE REACTION PRODUCT OF THE PLATINUM AND THE MATERIAL FROM THE BODY RELATIVE TO THE PLATINUM THEREBY LAEVING THE DESIRED PLATINUM PATTERN ON THE BODY.
Claim 3
Dependent Claim
23 words
A method as claimed in claim 1, wherein the reaction product is selectively removed relative to the platinum by means of ultrasonic energy.
Claim 4
Dependent Claim
34 words
A method as claimed in claim 1, wherein the material is chosen from at least one element belonging to the group consisting of the elements of groups IIIB and IVB of the periodic table.
Claim 5
Dependent Claim
13 words
A method as claimed in claim 3, wherein the material chosen is germanium.
Claim 6
Dependent Claim
24 words
A method as claimed in claim 3, wherein a layer of titanium or chromium is present between the layer of platinum and the substrate.
Claim 7
Dependent Claim
17 words
A method as claimed in claim 1 wherein a layer of gold is provided on the platinum.
References Cited (Backward Citations)
US3686080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |