US3347430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring ohmic contact microelectronic component separation method
Assignee: Melpar Inc
•
Filing: 1964-05-25
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Granted: 1967-10-17
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Turner E Pardue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:44
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D84/00; H10D84/01; H10D84/0123; H10D84/0126; H10D84/0158; H10W; H10W20/00; H10W20/40; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF SEPARATING INDIVIDUAL COMPONENTS FROM AN OXIDE-COATED SINGLE PARENT WAFER OF SEMICONDUCTOR MATERIAL COMPRISING REMOVING THE OXIDE LAYER FROM THE SURFACE OF SAID WAFER ALONG SUBSTANTIALLY CLOSED PATHS ABOUT THE PERIMETER OF EACH COMPONENT ON SAI WAFER, DEPOSITING ON EACH SAID PATH A SUBSTANTIALLY CLOSED RING OF OHMIC CONTACT MATERIAL WIDER THAN SAID PATH SO THAT SAID MINERAL ADHERENTLY CONTACTS BOTH SAID WAFER AND SAID OXIDE LAYER INTERIOR TO SAID RING, SCRIBING LINES UPON THE SURFACE OF SAID WAFER BETWEEN SAID RINGS, AND FLEXING SAID WAFER SO AS TO BREAK SAID WAFER ALONG SAID LINES.
Claim 2
Independent Claim
97 words
THE METHOD OF SEPARATING INDIVIDUAL COMPONENTS FROM AN OXIDE-COATED SINGLE PARENT WAFER OF SEMICONDUCTOR MATERIAL COMPRISING REMOVING THE OXIDE LAYER FROM THE SURFACE OF SAID WAFER ALONG SUBSTANTIALLY CLOSED PATHS ABOUT THE PERIMETER OF EACH COMPONENT ON SAI WAFER, DEPOSITING ON EACH SAID PATH A SUBSTANTIALLY CLOSED RING OF OHMIC CONTACT MATERIAL WIDER THAN SAID PATH SO THAT SAID MINERAL ADHERENTLY CONTACTS BOTH SAID WAFER AND SAID OXIDE LAYER INTERIOR TO SAID RING, SCRIBING LINES UPON THE SURFACE OF SAID WAFER BETWEEN SAID RINGS, AND FLEXING SAID WAFER SO AS TO BREAK SAID WAFER ALONG SAID LINES.
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |