US3248345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance compositions, elements and methods of making same
Assignee: International Business Machines Corp
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Filing: 1963-10-01
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Granted: 1966-04-26
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Mones
- 👤 Jr Kenneth E Neisser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:50
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ELECTRICAL RESISTOR COMPOSITION ADAPTED TO BE APPLIED TO AND FIRED ON AN ELECTRICALLY NONCONDUCTIVE CERAMIC BASE CONSISTING ESSENTIALLY OF 30% TO 50% FINELY DIVIDED P-TYPE SEMICONDUCTOR IN THE OXIDE FORM TAKEN FROM THE GROUP CONSISTING OF PALLADIUM AND RHODIUM, AS A CONDUCTIVE ELEMENT, SAID P-TYPE SEMICONDUCTOR DOPED WITH UP TO 15% BY WEIGHT OF A CATION TAKEN FROM THE GROUP CONSISTING OF ANTIMONY, CHROMIUM, LITHIUM AND SODIUM, AND 50% TO 70% FINELY DIVIDED BOROSILICATE GLASS FRIT.
Claim 2
Dependent Claim
77 words
AN ELECTRICAL RESISTOR COMPOSITION ADAPTED TO BE APPLIED TO AND FIRED ON AN ELECTRICALLY NONCONDUCTIVE CERAMIC BASE CONSISTING ESSENTIALLY OF 30% TO 50% FINELY DIVIDED P-TYPE SEMICONDUCTOR IN THE OXIDE FORM TAKEN FROM THE GROUP CONSISTING OF PALLADIUM AND RHODIUM, AS A CONDUCTIVE ELEMENT, SAID P-TYPE SEMICONDUCTOR DOPED WITH UP TO 15% BY WEIGHT OF A CATION TAKEN FROM THE GROUP CONSISTING OF ANTIMONY, CHROMIUM, LITHIUM AND SODIUM, AND 50% TO 70% FINELY DIVIDED BOROSILICATE GLASS FRIT.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |