US2768266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical noise element
Assignee: Phillips Petroleum Co
•
Filing: 1951-04-09
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Granted: 1956-10-23
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Expires: 1971-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Ross S Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:57
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/30; H; H01; H01J; H01J19/00; H01J19/42; H01J2893/00; H01J2893/0001; H01J2893/0002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A TRANSDUCER COMPRISING TWO OPPOSING SPACED ELECTRODES ELECTRICALLY CONNECTED TO ONE ANOTHER BY A CERAMIC TIP COMPRISING IN PARTS BY WEIGHT APPROXIMATELY 98 PERCENT ALUMINUM OXIDE AND APPROXIMATELY 2 PERCENT TITANIUM CARBIDE.
Claim 2
Dependent Claim
32 words
A TRANSDUCER COMPRISING TWO OPPOSING SPACED ELECTRODES ELECTRICALLY CONNECTED TO ONE ANOTHER BY A CERAMIC TIP COMPRISING IN PARTS BY WEIGHT APPROXIMATELY 98 PERCENT ALUMINUM OXIDE AND APPROXIMATELY 2 PERCENT TITANIUM CARBIDE.
References Cited (Backward Citations)
US1613877A
Cited
US1858265A
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US2006558A
Cited
US2271975A
Cited
US2396196A
Cited
US2471732A
Cited
US2573596A
Cited
US2589157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |