US3247576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabrication of crystalline shapes
Assignee: International Business Machines Corp
•
Filing: 1962-10-30
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Granted: 1966-04-26
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Expires: 1982-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick H Dill
- 👤 Richard F Rutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; B; B28; B28D; B28D5/00; B28D5/0005; B28D5/0017; B28D5/0023; H10; H10H; H10H20/00; H10H20/80; H10P; H10P52/00; Y; Y10; Y10S; Y10S148/00; Y10S148/028; Y10S148/115; Y10S148/145; Y10T; Y10T225/00; Y10T225/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE METHOD OF FABRICATING A SEMICONDUCTOR RESONANT CAVITY DEVICE COMPRISING THE STEPS OF FORMING A WAFER OF CRYSTALLINE SEMICONDUCTOR MATERIAL WITH A MAJOR SURFACE ESSENTIALLY PARALLEL TO A CRYSTALLOGRAPHIC PLANE WHICH IS PERPENDICULAR TO A CRYSTALLOGRAPHIC PLANE OF MINIMUM BOND STRENGTH OF THE PARTICULAR CRYSTALLINE MATERIAL; FORMING A P-N JUNCTION IN SAID SEMICONDUCTOR CRYSTAL PARALLEL TO SAID MAJOR SURFACE AND PERPENDUCULAR TO SAID CRYSTALLOGRAPHIC PLANE OF MINIMUM BOND STRENGTH; AND CLEAVING SAID WAFER PERPENDIUCLAR TO SAID MAJOR SURFACE TO EXPOSE AT LEAST ONE FACE OF SAID WAFER PERPENDICULAR TO SAID JUNCTION AND CORRESPONDING TO A NATURAL CRYSTALLOGRAPHIC PLANE OF SAID MATERIAL.
Claim 2
Independent Claim
101 words
THE METHOD OF FABRICATING A SEMICONDUCTOR RESONANT CAVITY DEVICE COMPRISING THE STEPS OF FORMING A WAFER OF CRYSTALLINE SEMICONDUCTOR MATERIAL WITH A MAJOR SURFACE ESSENTIALLY PARALLEL TO A CRYSTALLOGRAPHIC PLANE WHICH IS PERPENDICULAR TO A CRYSTALLOGRAPHIC PLANE OF MINIMUM BOND STRENGTH OF THE PARTICULAR CRYSTALLINE MATERIAL; FORMING A P-N JUNCTION IN SAID SEMICONDUCTOR CRYSTAL PARALLEL TO SAID MAJOR SURFACE AND PERPENDUCULAR TO SAID CRYSTALLOGRAPHIC PLANE OF MINIMUM BOND STRENGTH; AND CLEAVING SAID WAFER PERPENDIUCLAR TO SAID MAJOR SURFACE TO EXPOSE AT LEAST ONE FACE OF SAID WAFER PERPENDICULAR TO SAID JUNCTION AND CORRESPONDING TO A NATURAL CRYSTALLOGRAPHIC PLANE OF SAID MATERIAL.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |