US3233111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon whisker photocell with short response time
Assignee: Union Carbide Corp
•
Filing: 1962-05-31
•
Granted: 1966-02-01
•
Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 John N Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:10
CPC Classifications
H; H10; H10F; H10F30/00; G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/16; H01; H01S; H01S3/00; H01S3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PHOTOSENSITIVE DEVICE WHICH COMPRISES IN COMBINATION: A SILICON WHISKER, A D.C. VOLTAGE SOURCE,, A LOAD IMPEDANCE, AND CIRCUIT MEANS CONNECTING SAID WHISKER VOLTAGE SOURCE AND LOAD IMPEDANCE IN SERIES; SAID WHISKER HAVING A DIAMETER LESS THAN ABOUT 50 MICRONS AND AN ELECTRICAL RESISTIVITY OF AT LEAST 100 OHM CENTIMETERS.
Claim 2
Dependent Claim
50 words
A PHOTOSENSITIVE DEVICE WHICH COMPRISES IN COMBINATION: A SILICON WHISKER, A D.C. VOLTAGE SOURCE,, A LOAD IMPEDANCE, AND CIRCUIT MEANS CONNECTING SAID WHISKER VOLTAGE SOURCE AND LOAD IMPEDANCE IN SERIES; SAID WHISKER HAVING A DIAMETER LESS THAN ABOUT 50 MICRONS AND AN ELECTRICAL RESISTIVITY OF AT LEAST 100 OHM CENTIMETERS.
References Cited (Backward Citations)
US2871330A
Cited
US2963390A
Cited
US2847544A
Cited
US3009068A
Cited
US3004168A
Cited
US2929922A
Cited
US3130254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |