US3261074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing photoelectric semi-conductor devices
Assignee: US Philips Corp
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Filing: 1961-09-20
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Granted: 1966-07-19
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Expires: 1981-09-20
Abstract
No abstract record available.
Inventors
- 👤 Beauzee Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
H; H10; H10P; H10P50/00; H10P50/69; H10P50/691; H10F; H10F99/00; Y; Y10; Y10S; Y10S136/00; Y10S136/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE UTILIZING A SEMICONDUCTIVE BODY EXHIBITING PHOTOELECTRIC PROPERTIES, COMPRISING THE STEPS OF PROVIDING SAID SEMICONDUCTIVE BODY WITH A SURFACE LAYER OF ONE CONDUCTIVITY TYPE FORMING A JUNCTION WITH A BULK PORTION OF THE OPPOSITE CONDUCTIVITY TYPE AND PROVIDING CONTACTS TO SAID SURFACE LAYER AND SAID BULK PORTION, IRRADIATING WITH LIGHT THE SAID BODY AT SAID SURFACE LAYER, WHILE SP IRRADIATING MEASURING THE LIGHT GENERATED ELECTRICAL CURRENT OUTPUT OF SAID BODY ACROSS THE CONTACTS THERETO AND SUBJECTING THE SAID SURFACE LAYER TO A MATERIAL-REMOVAL BY ETCHING OPERATION REDUCING THE LAYER THICKNESS AND CAUSING THE MEASURED ELECTRICAL OUTPUT IN INCREASE, AND TERMINATING THE MATERIAL-REMOVAL OPERATION NOT BEFORE THE TERMINATING THE URED ELECTRICAL OUTPUT CHANGE WITH TIME REACHES ITS MAXIMUM VALUE BUT BEFORE THE ABSOLUTE OUTPUT SUBSTANTIALLY DECLINES.
Claim 2
Independent Claim
131 words
A METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE UTILIZING A SEMICONDUCTIVE BODY EXHIBITING PHOTOELECTRIC PROPERTIES, COMPRISING THE STEPS OF PROVIDING SAID SEMICONDUCTIVE BODY WITH A SURFACE LAYER OF ONE CONDUCTIVITY TYPE FORMING A JUNCTION WITH A BULK PORTION OF THE OPPOSITE CONDUCTIVITY TYPE AND PROVIDING CONTACTS TO SAID SURFACE LAYER AND SAID BULK PORTION, IRRADIATING WITH LIGHT THE SAID BODY AT SAID SURFACE LAYER, WHILE SP IRRADIATING MEASURING THE LIGHT GENERATED ELECTRICAL CURRENT OUTPUT OF SAID BODY ACROSS THE CONTACTS THERETO AND SUBJECTING THE SAID SURFACE LAYER TO A MATERIAL-REMOVAL BY ETCHING OPERATION REDUCING THE LAYER THICKNESS AND CAUSING THE MEASURED ELECTRICAL OUTPUT IN INCREASE, AND TERMINATING THE MATERIAL-REMOVAL OPERATION NOT BEFORE THE TERMINATING THE URED ELECTRICAL OUTPUT CHANGE WITH TIME REACHES ITS MAXIMUM VALUE BUT BEFORE THE ABSOLUTE OUTPUT SUBSTANTIALLY DECLINES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |