US3377697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of terminating thin film components
Assignee: Associated Electrical Industries Ltd
•
Filing: 1965-10-15
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Granted: 1968-04-16
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Hobbs Richard Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01B; H01B1/00; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/08; H01C17/28; H01C17/288; H01C7/00; H01C7/006; H01G2/00; H10; H10D; H10D99/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T29/49101; Y10T29/49117; Y10T29/49124; Y10T29/49147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A METHOD FOR PROVIDING AN ELECTRIC COMPONENT INCLUDING A THIN FILM OF TANTALUM ON A SUBSTRATE, WITH A CONTACT AREA FOR THE ATTACHMENT OF EXTERNAL LEADS, COMPRISING: (A) PROVIDING A FIRMLY ADHERENT CHROMIUM FILM OVER A FIRST AREA OF THE SUBSTRATE INCLUDING AND GREATER THAN THE DESIRED CONTACT AREA, (B) PROVIDING ON THE CHROMIUM FILM A FIRMLY ADHERENT GOLD FILM EXTENDING OVER A SECOND AREA INCLUDING AND GREATER THAN THE DESIRED CONTACT AREA BUT LESSER IN AREA AND LYING COMPLETELY WITHIN THE AREA OF THE CHROMIUM FILM, (C) COVERING THAT PART OF THE GOLD FILM WHICH IS TO FORM THE DESIRED CONTACT AREA WITH A FILM OF NICKEL, (D) COATING A SELECTED SURFACE AREA OF THE SUBSTRATE INCLUDING THE EXPOSED PARTS OF THE FIRST AND SECOND AREAS AND OF THE NICKEL WITH A THIN TANTALUM FILM, AND (E) REMOVING THE NICKEL FILM AND THUS THE OVERLYING TANTALUM FILM TO EXPOSE THE DESIRED CONTACT AREA AS AN AREA OF UNCONTAMINATED GOLD FILM.
Claim 2
Independent Claim
161 words
A METHOD FOR PROVIDING AN ELECTRIC COMPONENT INCLUDING A THIN FILM OF TANTALUM ON A SUBSTRATE, WITH A CONTACT AREA FOR THE ATTACHMENT OF EXTERNAL LEADS, COMPRISING: (A) PROVIDING A FIRMLY ADHERENT CHROMIUM FILM OVER A FIRST AREA OF THE SUBSTRATE INCLUDING AND GREATER THAN THE DESIRED CONTACT AREA, (B) PROVIDING ON THE CHROMIUM FILM A FIRMLY ADHERENT GOLD FILM EXTENDING OVER A SECOND AREA INCLUDING AND GREATER THAN THE DESIRED CONTACT AREA BUT LESSER IN AREA AND LYING COMPLETELY WITHIN THE AREA OF THE CHROMIUM FILM, (C) COVERING THAT PART OF THE GOLD FILM WHICH IS TO FORM THE DESIRED CONTACT AREA WITH A FILM OF NICKEL, (D) COATING A SELECTED SURFACE AREA OF THE SUBSTRATE INCLUDING THE EXPOSED PARTS OF THE FIRST AND SECOND AREAS AND OF THE NICKEL WITH A THIN TANTALUM FILM, AND (E) REMOVING THE NICKEL FILM AND THUS THE OVERLYING TANTALUM FILM TO EXPOSE THE DESIRED CONTACT AREA AS AN AREA OF UNCONTAMINATED GOLD FILM.
References Cited (Backward Citations)
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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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |