US3046176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricating semiconductor devices
Assignee: RCA Corp
•
Filing: 1958-07-25
•
Granted: 1962-07-24
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Expires: 1978-07-25
Abstract
No abstract record available.
Inventors
- 👤 Wolfram A Bosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:37
CPC Classifications
H; H10; H10P; H10P50/00; H10P50/69; H10P50/691; C; C23; C23F; C23F1/00; C23F1/02; H10P14/00; H10P14/40; H10P14/46; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/028; Y10S148/051; Y10S148/106; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE PROCESS OF DICING A SLICE OF SEMICONDUCTIVE MATERIAL INTO PELLETS, COMPRISING THE STEPS OF METALIZING PREDETERMINED AREAS IN REGISTRY ON OPPOSITE FACES OF SAID SLICE WITH A THIN COATING OF A METAL SELECTED FROM THE GROUP CONSISTING OF COBALT, NICKEL, RHODIUM, PALLADIUM, IRIDIUM, PLATINUM, COPPER, SILVER AND GOLD, DIPPING SAID SLICE IN MOLTEN SOLDER WHICH COATS ONLY SAID METALLIZED AREAS ON SAID SLICE, SAID SOLDER BEING SELECTED FROM THE GROUP CONSISTING OF LEAD, TIN AND LEAD-TIN ALLOYS, AND IMMERSING SAID SLICE IN AN ETCHANT RELATIVELY INERT WITH RESPECT TO SAID SOLDER THEREBY TO DISSOLVE THE PORTIONS OF SAID SLICE BETWEEN SAID SOLDER-COATED AREAS AND PRODUCE A PLURALITY OF PELLETS COATED WITH SAID METALLIC COATING AND SAID SOLDER.
Claim 2
Dependent Claim
118 words
THE PROCESS OF DICING A SLICE OF SEMICONDUCTIVE MATERIAL INTO PELLETS, COMPRISING THE STEPS OF METALIZING PREDETERMINED AREAS IN REGISTRY ON OPPOSITE FACES OF SAID SLICE WITH A THIN COATING OF A METAL SELECTED FROM THE GROUP CONSISTING OF COBALT, NICKEL, RHODIUM, PALLADIUM, IRIDIUM, PLATINUM, COPPER, SILVER AND GOLD, DIPPING SAID SLICE IN MOLTEN SOLDER WHICH COATS ONLY SAID METALLIZED AREAS ON SAID SLICE, SAID SOLDER BEING SELECTED FROM THE GROUP CONSISTING OF LEAD, TIN AND LEAD-TIN ALLOYS, AND IMMERSING SAID SLICE IN AN ETCHANT RELATIVELY INERT WITH RESPECT TO SAID SOLDER THEREBY TO DISSOLVE THE PORTIONS OF SAID SLICE BETWEEN SAID SOLDER-COATED AREAS AND PRODUCE A PLURALITY OF PELLETS COATED WITH SAID METALLIC COATING AND SAID SOLDER.
References Cited (Backward Citations)
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Cited
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US2536383A
Cited
US2743506A
Cited
US2777192A
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US2829460A
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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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |