US3592050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of detecting inhomogeneities in ceramics
Assignee: United States Atomic Energy Commission
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Filing: 1969-06-30
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Granted: 1971-07-13
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Expires: 1989-06-30
Abstract
Abstract A method of detecting inhomogeneities in a ceramic solid solution by measuring the internal friction in the solid solution and comparing it with a standard. This was done by vibrating a sintered bar formed from the solid solution at mechanical resonance and comparing the rate of amplitude decay of the vibrations with a standard.
Inventors
- 👤 Alfred W Nutt Jr
- 👤 Joseph H Handwerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:54
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/32; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02827
Claims Analysis
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |