US2879189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for growing junction semi-conductive devices
Assignee: Individual
•
Filing: 1956-11-21
•
Granted: 1959-03-24
•
Expires: 1976-11-21
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:31
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/14; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF GROWING A SEMICONDUCTIVE CRYSTAL HAVING AT LEAST ONE P-N JUNCTION FROM A MELT OF SEMICONDUCTIVE MATERIAL INCLUDING IMPURITY ATOMS WHICH COMPRISES DRAWING THE CRYSTAL FROM THE MELT, CONTROLLING THE HEAT AT THE CRYSTAL GROWING REGION TO FORM A CURVED SOLIDLIQUID INTERFACE HAVING A RADIUS OF CURVATURE SUCH THAT IMPURITY ATOMS REJECTED BY THE SOLID CONCENTRATE IN A REGION ADJACENT SAID SOLID-LIQUID INTERFACE AND ARE TRAPPED IN THE CRYSTAL AS IT IS GROWN FROM THE MELT TO FORM A LONGITUDINAL REGION IN SAID CRYSTAL OF A CONDUCTIVELY TYPE CORRESPONDING TO SAID IMPURITY ATOMS.
Claim 2
Independent Claim
95 words
THE METHOD OF GROWING A SEMICONDUCTIVE CRYSTAL HAVING AT LEAST ONE P-N JUNCTION FROM A MELT OF SEMICONDUCTIVE MATERIAL INCLUDING IMPURITY ATOMS WHICH COMPRISES DRAWING THE CRYSTAL FROM THE MELT, CONTROLLING THE HEAT AT THE CRYSTAL GROWING REGION TO FORM A CURVED SOLIDLIQUID INTERFACE HAVING A RADIUS OF CURVATURE SUCH THAT IMPURITY ATOMS REJECTED BY THE SOLID CONCENTRATE IN A REGION ADJACENT SAID SOLID-LIQUID INTERFACE AND ARE TRAPPED IN THE CRYSTAL AS IT IS GROWN FROM THE MELT TO FORM A LONGITUDINAL REGION IN SAID CRYSTAL OF A CONDUCTIVELY TYPE CORRESPONDING TO SAID IMPURITY ATOMS.
References Cited (Backward Citations)
US2631356A
Cited
US2214976A
Cited
US2674520A
Cited
US2730470A
Cited
US2703296A
Cited
GB753160A
Cited
US2789039A
Cited
US2783168A
Cited
FR1127036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |