Patent US2689186A successfully refreshed from Google Patents.
US2689186A
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Ceramic dielectric materials
Assignee: —
•
Filing: —
•
Granted: 1954-09-14
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Expires: 1971-09-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/50; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206; C04B2235/3208; C04B2235/3213; C04B2235/3215; C04B2235/3217; C04B2235/3231; C04B2235/3232; C04B2235/3234; C04B2235/3236; C04B2235/3281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A FLUID TIGHT CERAMIC DIELECTRIC MATERIAL HAVING A LOW TEMPERATURE COEFFICIENT, A SPECIFIC INDUCTIVE CAPACITY OF ABOUT 130 AND A MAXIMUM LOSS ANGLE AT 1 MEGACYCLE OF 2.5X10-4, SAID CERAMIC ESSENTIALLY CONSISTING OF THE FOLLOWING PROPORTIONS BY WEIGHT:
Claim 2
Dependent Claim
38 words
A FLUID TIGHT CERAMIC DIELECTRIC MATERIAL HAVING A LOW TEMPERATURE COEFFICIENT, A SPECIFIC INDUCTIVE CAPACITY OF ABOUT 130 AND A MAXIMUM LOSS ANGLE AT 1 MEGACYCLE OF 2.5X10-4, SAID CERAMIC ESSENTIALLY CONSISTING OF THE FOLLOWING PROPORTIONS BY WEIGHT:
References Cited (Backward Citations)
US2520376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |