US2856681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fixing leads to silicon and article resulting therefrom
Assignee: Texas Instruments Inc
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Filing: 1955-08-08
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Granted: 1958-10-21
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 James W Lacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:58
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10P; H10P95/00; H10W72/071; H10W72/073; H10W72/07331; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF MAKING CONTACT TO A SILIICON ELEMENT WHICH COMPRISES THE STEPS OF COATING A PORTION OF A SILICON ELEMENT WITH A PASTE CONSISTING OF SILVER PARTICLES, A VAPORIZABLE BINDER AND BISMUTH AS A CATALYST, SAID SILVER PARTICLES CONSTITUTING AT LEAST 40% BY WEIGHT OF THE COMPOSITION AND SAID CATALYST CONSTITUTING ABOUT 1% BY WEIGHT OF THE COMPOSITION, BAKING THE COATED SILICON ELEMENT AT A TEMPERATURE OF FROM ABOUT 525*C. TO ABOUT 700*C. FOR A PERIOD OF FROM ABOUT 15 MINUTES TO ABOUT 60 MINUTES, AND ATTACHING A LEAD TO SAID COATING.
Claim 2
Independent Claim
93 words
A METHOD OF MAKING CONTACT TO A SILIICON ELEMENT WHICH COMPRISES THE STEPS OF COATING A PORTION OF A SILICON ELEMENT WITH A PASTE CONSISTING OF SILVER PARTICLES, A VAPORIZABLE BINDER AND BISMUTH AS A CATALYST, SAID SILVER PARTICLES CONSTITUTING AT LEAST 40% BY WEIGHT OF THE COMPOSITION AND SAID CATALYST CONSTITUTING ABOUT 1% BY WEIGHT OF THE COMPOSITION, BAKING THE COATED SILICON ELEMENT AT A TEMPERATURE OF FROM ABOUT 525*C. TO ABOUT 700*C. FOR A PERIOD OF FROM ABOUT 15 MINUTES TO ABOUT 60 MINUTES, AND ATTACHING A LEAD TO SAID COATING.
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |