US3352797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thallium oxide glaze containing an additive of ruthenium oxide
Assignee: Airco Inc
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Filing: 1965-01-27
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Granted: 1967-11-14
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Expires: 1985-01-27
Abstract
No abstract record available.
Inventors
- 👤 Kim Kee Hyong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:52
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5022; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/074; C03C8/00; C03C8/02; C03C8/10; C03C8/14; C03C8/18; H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654; H01C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A CONDUCTIVE COMPOSITION SUITABLE FOR ELECTRIC RESISTORS COMPRISING A MIXTURE OF THALLIUM OXIDE AND RUTHENIUM DIOXIDE INTIMATELY DISPERSED IN A GLASS MATRIX, THE GLASS COMPRISING SAID MATRIX BEING SELECTED FROM THE GROUP CONSISTING OF BOROSILICATE AND PHOSPHATE GLASSES.
Claim 2
Dependent Claim
38 words
A CONDUCTIVE COMPOSITION SUITABLE FOR ELECTRIC RESISTORS COMPRISING A MIXTURE OF THALLIUM OXIDE AND RUTHENIUM DIOXIDE INTIMATELY DISPERSED IN A GLASS MATRIX, THE GLASS COMPRISING SAID MATRIX BEING SELECTED FROM THE GROUP CONSISTING OF BOROSILICATE AND PHOSPHATE GLASSES.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |