US3522064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized zirconia containing niobia and calcium oxide
Assignee: EIDP Inc
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Filing: 1967-08-21
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Granted: 1970-07-28
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Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert Valdsaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:50
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/482; C04B35/622; C04B35/626; C04B35/62605; C04B35/6261; C04B35/6262; C04B35/62685; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3201; C04B2235/3203; C04B2235/3205; C04B2235/3208; C04B2235/3231; C04B2235/3251; C04B2235/44; C04B2235/442; C04B2235/444; C04B2235/445; C04B2235/447; C04B2235/449; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5427; C04B2235/5436; C04B2235/5463; C04B2235/5472; C04B2235/60; C04B2235/604; C04B2235/65; C04B2235/656; C04B2235/6562; C04B2235/6567; C04B2235/70; C04B2235/74; C04B2235/76; C04B2235/762; C04B2235/77; C04B2235/80; C04B2235/85; C04B2235/96
Claims Analysis
Total Claims: 0
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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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |