US3238151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor composition
Assignee: Airco Inc
•
Filing: 1963-06-07
•
Granted: 1966-03-01
•
Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Kim Kee Hyong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/076; C03C3/102; C03C3/108; C03C4/00; C03C4/14; H01B; H01B1/00; H01B1/14; H01C7/00; H01C7/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A RESISTOR COMPOSITION CHARACTERIZED BY LOW ELECTRICAL NOISE, LOW VOLTAGE COEFFICIENT OF RESISTANCE, AND LOW TEMPERATURE COEFFICIENT OF RESISTANCE COMPRISING FINELY DIVIDED PARTICLES OF THALLIUM OXIDE AS THE MAJOR CONDUCTIVE COMPONENT DISPERSED IN A MATRIX OF BOROSILICATE GLASS, THE PROPORTIONS OF THALLIUM OXIDE TO THE GLASS MATRIX BEING WITHIN THE RANGE, THALLIUM OXIDE 95% TO 20% BY WEIGHT AND MATRIX 5% TO 80% BY WEIGHT.
Claim 2
Dependent Claim
65 words
A RESISTOR COMPOSITION CHARACTERIZED BY LOW ELECTRICAL NOISE, LOW VOLTAGE COEFFICIENT OF RESISTANCE, AND LOW TEMPERATURE COEFFICIENT OF RESISTANCE COMPRISING FINELY DIVIDED PARTICLES OF THALLIUM OXIDE AS THE MAJOR CONDUCTIVE COMPONENT DISPERSED IN A MATRIX OF BOROSILICATE GLASS, THE PROPORTIONS OF THALLIUM OXIDE TO THE GLASS MATRIX BEING WITHIN THE RANGE, THALLIUM OXIDE 95% TO 20% BY WEIGHT AND MATRIX 5% TO 80% BY WEIGHT.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |